July 9, 2026
5 Signs Your Home Is Overdue for a Deep Cleaning
A clean home does more than look good—it creates a healthier, more comfortable environment for you and your family. While regular cleaning helps maintain your living space, it doesn't always remove the buildup that accumulates over time. Dust, grease, soap scum, and hidden contaminants gradually settle into surfaces, making your home harder to keep clean with everyday routines. The challenge is that many homeowners don't realize they need a deep cleaning until the buildup becomes obvious. If you've noticed any of the following signs, your home may be overdue for a professional deep cleaning. 1. Persistent Odors That Won't Go Away Have you ever cleaned your home, only to notice that it still doesn't smell fresh? Persistent odors are often a sign that the source of the problem hasn't been removed. Cooking residue, pet dander, food particles, moisture, and bacteria can become trapped in porous surfaces and hard-to-reach areas. Instead of masking odors with air fresheners, a deep cleaning focuses on removing the buildup that causes unpleasant smells in the first place. If your home never feels truly fresh, it's likely time for a more thorough cleaning. 2. Dust Returns Almost Immediately After Cleaning You dust your furniture, vacuum the floors, and within a day or two, everything looks dusty again. While some dust is inevitable, excessive dust buildup may indicate that particles have accumulated throughout the home. Dust comes from multiple sources, including: Outdoor soil and pollen tracked inside Fabric fibers Pet dander Dead skin cells Particles circulating through your HVAC system According to the Environmental Protection Agency (EPA), indoor air can contain pollutants that continually settle on household surfaces, making routine dusting less effective when deeper cleaning is overdue. Professional deep cleaning removes accumulated dust from areas that are often overlooked during regular cleaning, helping reduce the amount that quickly returns. 3. Grease Is Building Up in Your Kitchen The kitchen is one of the hardest-working spaces in any home. Even if countertops are wiped down daily, grease from cooking gradually settles on: Cabinets Backsplashes Appliances Range hoods Light fixtures Over time, this grease attracts dust and dirt, creating a sticky film that's difficult to remove with everyday cleaning products. If kitchen surfaces feel sticky or appear dull even after cleaning, a professional deep cleaning can safely remove the buildup without damaging finishes. 4. Your Bathroom Never Looks Completely Clean Bathrooms are exposed to constant moisture, making them one of the most challenging areas to maintain. Soap scum, hard water deposits, mildew, and mineral buildup can develop on: Shower doors Tile Grout Faucets Toilets Sinks Routine cleaning helps slow this process, but once buildup becomes established, it often requires specialized techniques and products to restore surfaces. If you're spending more time scrubbing but seeing fewer results, your bathroom may be overdue for a deep cleaning. 5. Stains and Dirt Are Becoming Harder to Remove One of the clearest signs that a home needs deep cleaning is when stains and dirt no longer come off easily. This can happen on: Floors Baseboards Kitchen surfaces Bathroom fixtures High-touch areas As dirt accumulates over time, it bonds more firmly to surfaces, making everyday cleaning less effective. The longer buildup remains, the more difficult it becomes to remove—and in some cases, it can permanently affect the appearance of your home's finishes. Why Waiting Makes Cleaning More Difficult Many homeowners postpone deep cleaning because their home doesn't look "that dirty." Unfortunately, visible dirt is only part of the picture. Grease, dust, allergens, bacteria, and residue accumulate gradually. The longer they remain, the more time and effort are required to remove them. Delaying professional cleaning can also contribute to: Increased wear on flooring Permanent staining Lingering odors Reduced indoor air quality More time spent on routine cleaning Deep cleaning isn't just about restoring appearance—it's about preventing long-term buildup before it becomes a bigger problem. What Professional Deep Cleaning Includes Unlike routine maintenance cleaning, professional deep cleaning focuses on the areas that are often skipped or difficult to clean properly. At Maid Group, our deep cleaning services include detailed attention to areas such as: Baseboards Behind and around furniture Kitchen grease buildup Bathroom fixtures and grout High-touch surfaces Hard-to-reach corners Detailed dust removal throughout the home Every cleaning is performed with careful attention to detail and appropriate cleaning methods for your home's surfaces. Don't Wait Until Cleaning Becomes Overwhelming Many homeowners don't realize how much buildup has accumulated until after a professional cleaning is complete. The difference isn't just visible—it's something you can feel. A cleaner home is easier to maintain, more comfortable to live in, and healthier for everyone inside. If you've noticed persistent odors, recurring dust, grease buildup, stubborn stains, or bathrooms that never seem completely clean, now is the right time to take action. Maid Group provides professional residential cleaning, deep cleaning, apartment and condominium cleaning, post-construction cleaning, and commercial cleaning services designed to help you maintain a cleaner, healthier space without the stress. Don't wait for dirt and buildup to become harder to remove. Schedule your professional deep cleaning with Maid Group today and enjoy the peace of mind that comes with a truly clean home.
Read MoreJune 12, 2026
The Most Expensive Cleaning Mistakes Homeowners Make
Most homeowners clean with the best intentions. They want a healthy, comfortable, and well-maintained home. However, some common cleaning mistakes can do more harm than good. Using the wrong products, applying too much moisture, or mixing chemicals incorrectly can damage surfaces, shorten the lifespan of materials, and even create health risks. What seems like a simple cleaning shortcut can end up costing hundreds or even thousands of dollars in repairs and replacements. Understanding these mistakes can help you protect your home and make smarter decisions about cleaning and maintenance. Mistake #1: Using the Wrong Cleaning Products on Surfaces Not all cleaning products are designed for every material. Many homeowners assume that a stronger cleaner will deliver better results. In reality, using the wrong product can permanently damage surfaces. Common examples include: Using abrasive cleaners on natural stone countertops Applying harsh chemicals to hardwood floors Using bleach on surfaces that can discolor or deteriorate Cleaning stainless steel with products that leave scratches or corrosion According to guidance from manufacturers and industry cleaning professionals, different materials require specific cleaning methods and products to preserve their appearance and durability. Once damage occurs, repairs are often expensive and sometimes irreversible. Mistake #2: Using Too Much Water Water is one of the most overlooked causes of household damage. While moisture is necessary for cleaning, excessive water can create serious problems, particularly on porous materials. Areas commonly affected include: Hardwood flooring Laminate flooring Cabinetry Baseboards Furniture Excess moisture can seep into materials, causing: Warping Swelling Cracking Mold growth The Environmental Protection Agency (EPA) has long emphasized the importance of controlling moisture indoors because excessive dampness can contribute to mold development and indoor air quality issues. What appears to be a harmless cleaning habit can eventually lead to costly restoration work. Mistake #3: Mixing Cleaning Chemicals Many people believe combining cleaning products creates a stronger solution. This is one of the most dangerous cleaning mistakes homeowners can make. Certain chemical combinations can release toxic gases or create hazardous reactions. For example: Bleach should never be mixed with ammonia. Bleach should never be mixed with acidic products. The Centers for Disease Control and Prevention (CDC) and other public health organizations warn against mixing household cleaning chemicals due to the potential health risks. Using products exactly as directed is critical for both safety and effectiveness. Mistake #4: Ignoring Product Instructions Cleaning products are developed with specific application methods, contact times, and safety guidelines. Many homeowners: Spray and immediately wipe away disinfectants Use excessive amounts of product Fail to dilute concentrates properly Skip recommended dwell times As a result, products may not perform as intended. A surface may appear clean while contaminants remain behind. Following manufacturer instructions is essential to achieve proper cleaning and disinfection results. Mistake #5: Focusing Only on Visible Dirt One of the biggest misconceptions about cleaning is that if a surface looks clean, it is clean. In reality, many problem areas are hidden from view. Commonly overlooked locations include: Behind appliances Baseboards Air vents Light switches Door frames Under furniture Over time, these neglected areas collect dust, grease, allergens, and bacteria. The buildup can affect indoor air quality, create odors, and make routine cleaning less effective. Professional cleaning services are designed to address these hidden areas that homeowners often miss. Mistake #6: Waiting Too Long Between Deep Cleanings Many homeowners rely entirely on weekly or monthly maintenance cleaning. While routine cleaning is important, it does not remove all accumulated dirt and residue. Over time: Grime builds up in kitchens Soap scum hardens in bathrooms Dust accumulates in hard-to-reach areas Floors collect embedded dirt The longer buildup remains, the harder and more expensive it becomes to remove. Regular deep cleaning helps prevent long-term damage while maintaining a healthier living environment. The Hidden Cost of DIY Cleaning Mistakes The financial impact of cleaning mistakes is often underestimated. A damaged hardwood floor, stained countertop, warped cabinet, or mold issue can cost significantly more to repair than investing in professional cleaning services from the start. Professional cleaners understand: Which products to use Which surfaces require special care How much moisture is appropriate How to clean effectively without causing damage This expertise helps protect one of your largest investments: your home. Why Professional Cleaning Is a Smarter Investment Professional cleaning is about more than appearance. It is about preserving surfaces, protecting indoor environments, and preventing costly mistakes. At Maid Group, our trained cleaning professionals understand how to properly care for different materials and surfaces throughout your home. We use appropriate cleaning methods, pay attention to detail, and help prevent the buildup that can lead to long-term damage. Instead of risking expensive repairs caused by improper cleaning techniques, trust professionals who know how to clean safely and effectively. Protect Your Home Before Small Mistakes Become Costly Problems Many cleaning mistakes don't show immediate consequences. The damage develops gradually over time until a repair or replacement becomes unavoidable. The good news is that these problems are preventable. With professional cleaning services from Maid Group, you can maintain a cleaner, healthier home while protecting the surfaces and materials you rely on every day. Don't wait until damage becomes visible. Schedule your professional cleaning service with Maid Group today and give your home the expert care it deserves.
Read MoreMay 11, 2026
Why Your Floors Get Dirty Faster Than You Expect
You vacuum, mop, and still—within a day or two—your floors look dirty again. For many homeowners, this is one of the most frustrating parts of keeping a home clean. The problem isn’t that you’re not cleaning enough. It’s that floors collect more contamination, faster, than almost any other surface in your home—and most of it is invisible. Understanding why this happens is the key to keeping your floors cleaner for longer. Floors Are the First Point of Contact for Everything Every time someone walks into your home, they bring in particles from outside. According to indoor air and surface research referenced by the Environmental Protection Agency (EPA), common contaminants tracked indoors include: Dirt and soil particles Pollen and outdoor allergens Bacteria and microorganisms Moisture and organic debris These particles settle directly onto floors and get distributed throughout the home with every step. Even if your home looks clean, your floors are constantly collecting new contamination. Why Dirt Builds Up So Quickly There are three main reasons floors get dirty faster than expected: 1. Continuous Foot Traffic Every step grinds dirt deeper into flooring materials, especially in: Entryways Kitchens Hallways Living areas Over time, this creates buildup that simple mopping cannot fully remove. 2. Fine Dust Circulation Dust doesn’t stay in one place. It moves through the air and settles repeatedly. This dust is made up of: Fabric fibers Skin particles Pet dander Outdoor pollutants As noted by the EPA, indoor dust continuously recirculates, meaning your floors are constantly being recontaminated—even after cleaning. 3. Moisture and Residue Moisture from shoes, spills, and humidity makes floors more prone to trapping dirt. When combined with: Grease from kitchens Residue from cleaning products Organic material It creates a sticky layer that attracts even more dirt over time. Why Regular Cleaning Isn’t Enough Most homeowners rely on: Vacuuming Sweeping Basic mopping While these methods help maintain appearance, they don’t fully remove embedded dirt or residue. Common issues include: Mops spreading dirty water instead of removing buildup Vacuums not extracting deeply embedded particles Residue from cleaning products attracting more dirt This is why floors often look dirty again shortly after cleaning. The Hidden Damage Dirty Floors Cause Beyond appearance, dirty floors can lead to long-term problems: Surface wear: Abrasive particles scratch and dull flooring Bacteria buildup: High-traffic areas accumulate microorganisms Reduced indoor air quality: Dust and particles get re-released into the air Permanent staining: Residue becomes harder to remove over time What starts as minor buildup can eventually require costly restoration or replacement. What Professional Floor Cleaning Does Differently Professional cleaning goes beyond surface-level results. At Maid Group, floor cleaning focuses on removal, not redistribution, using methods designed to break down and extract buildup properly. This includes: Deep cleaning of high-traffic areas Proper removal of residue and grease layers Attention to edges, corners, and baseboards Use of the right products for each surface type Techniques that prevent recontamination The result is not just cleaner-looking floors—but floors that stay cleaner longer. Why Waiting Makes the Problem Worse The longer dirt and residue remain on your floors: The deeper they embed into surfaces The harder they become to remove The more damage they cause over time Regular maintenance alone cannot reverse heavy buildup. At that point, only professional deep cleaning can restore the surface properly. Restore Floors That Actually Stay Clean If your floors get dirty again within days, it’s not a cleaning frequency issue. It’s a depth issue. Professional cleaning removes what regular routines leave behind—so your floors don’t just look clean, they stay clean. Maid Group provides professional residential and commercial cleaning services designed to protect your floors, improve cleanliness, and extend the life of your surfaces. Stop cleaning the same problem over and over. Fix it the right way. Schedule your professional cleaning with Maid Group today and experience the difference real cleaning makes.
Read MoreApril 7, 2026
Why Odors Keep Coming Back in Your Home
You clean your home, open the windows, maybe even use air fresheners—yet the smell keeps coming back. This is one of the most common frustrations homeowners face: a space that looks clean but never truly smells fresh. The reason is simple. Odors don’t just exist in the air. They live in surfaces. Until the source is properly removed, the smell will always return. Understanding why this happens is the first step to solving it permanently. Odors Don’t Disappear — They Get Trapped Most household odors are caused by microscopic particles that settle into materials around your home. According to indoor air quality research referenced by the Environmental Protection Agency (EPA), fabrics and porous surfaces easily absorb and retain these particles. Common odor sources include: Cooking oils and food residue Pet dander and accidents Moisture and humidity Body oils and sweat Smoke and airborne pollutants These particles embed themselves into surfaces such as: Sofas and upholstered furniture Carpets and rugs Curtains Mattresses Even walls and baseboards This is why spraying a fragrance only masks the smell temporarily. The source remains untouched. The Real Problem: The Source Is Still There A persistent odor always points to one issue: the source hasn’t been fully removed. For example: Grease buildup in kitchens continues to release smells over time Moisture trapped in bathrooms or fabrics can lead to musty odors Pet-related particles remain deep inside carpets and upholstery Dust buildup contributes to stale indoor air Regular cleaning routines often address visible dirt but not the embedded particles causing the odor. As long as those particles remain, the smell will return. Why DIY Cleaning Doesn’t Solve the Problem Most homeowners rely on surface-level cleaning methods: Wiping counters Vacuuming floors Using air fresheners or scented products While these help temporarily, they do not extract what’s trapped deep within materials. Common limitations of DIY cleaning include: 1. Lack of deep extraction Standard vacuums and household tools cannot remove particles embedded in fabrics and fibers. 2. Product limitations Many store-bought cleaners are designed for light cleaning, not odor elimination at the source. 3. Missed areas Baseboards, upholstery, behind furniture, and high-contact zones are often skipped. 4. Odor masking instead of removal Air fresheners only cover smells instead of eliminating them. This creates a cycle where odors seem to disappear—then quickly return. The Areas Where Odors Hide the Most Even well-maintained homes have hidden zones where odor buildup is strongest: Upholstered furniture Carpets and rugs Mattresses and bedding Kitchen surfaces and grease-prone areas Bathrooms with high humidity Trash and disposal areas Behind and under furniture These are the areas that require deeper, more targeted cleaning to fully eliminate odor sources. Why Professional Cleaning Works Professional cleaning addresses the root cause, not just the symptoms. At Maid Group, the process focuses on removal, not masking, using methods designed to eliminate odor-causing particles from surfaces and materials. This includes: Deep cleaning of high-absorption materials like upholstery and carpets Detailed cleaning of kitchens and grease-prone surfaces Proper treatment of bathrooms to reduce moisture-related odors Cleaning of overlooked areas where buildup accumulates Use of effective products applied with the correct techniques By targeting the actual source, professional cleaning breaks the cycle of recurring odors. The Longer You Wait, the Stronger the Odor Becomes Odor-causing particles accumulate over time. The longer they remain: The deeper they settle into materials The harder they become to remove The more noticeable and persistent the smell becomes What starts as a mild odor can turn into a long-term issue that requires more intensive cleaning. Acting early prevents that buildup and restores freshness faster. Restore a Home That Truly Feels Clean A fresh-smelling home isn’t achieved with fragrance—it’s achieved by removing what’s causing the odor in the first place. If odors keep coming back, it’s not a cleaning frequency problem. It’s a depth problem. Maid Group provides professional residential and commercial cleaning services designed to eliminate odor at its source, leaving your space not just looking clean, but truly refreshed. Stop masking the problem. Eliminate it. Schedule your professional cleaning with Maid Group today and experience what a truly clean home feels like.
Read MoreMarch 11, 2026
The Top 7 Areas Most Homeowners Forget to Clean
A home can look spotless at first glance. Floors are vacuumed, countertops shine, and everything appears organized. But according to cleaning and hygiene guidance from the Centers for Disease Control and Prevention (CDC) and best-practice standards promoted by the American Cleaning Institute (ACI), many of the most contaminated areas inside a home are the ones people rarely think to clean. This creates a common problem for homeowners: a false sense of cleanliness. Surfaces may look clean while bacteria, dust buildup, and grime continue accumulating in overlooked spaces. If your home never quite feels fully clean — even after regular weekly cleaning — these forgotten areas are usually the reason. Below are the seven places germs love most, and why professional cleaning makes the difference. Why Forgotten Areas Matter More Than You Think High-touch and hidden surfaces collect oils, moisture, dust, and microorganisms over time. Without proper cleaning techniques and frequency, buildup spreads contaminants throughout the home through everyday contact and air circulation. Routine wiping and vacuuming help maintain appearance. Targeted professional cleaning restores true hygiene. 1. Light Switches Light switches are among the most frequently touched surfaces in any home, yet they are rarely disinfected. Hands transfer bacteria, oils, and viruses multiple times per day. The CDC identifies high-touch surfaces as priority areas for regular disinfection because they contribute significantly to germ transmission. Common mistake: Cleaning around switches but not the switches themselves. Professional approach: Safe disinfection using surface-appropriate products that eliminate microbes without damaging finishes. 2. Baseboards Baseboards quietly collect dust, pet dander, hair, and airborne particles that settle over time. When ignored: Dust recirculates through airflow. Allergens accumulate. Rooms feel dusty shortly after cleaning. Most homeowners skip baseboards because they require time, detailed work, and proper tools — but professionally cleaned baseboards dramatically change how fresh a space feels. 3. Door Frames and Handles Door handles are cleaned occasionally. Door frames almost never are. Dust and oils accumulate along edges and upper frames, especially in high-traffic areas. Over time, this buildup contributes to indoor air contamination and visible discoloration. Professional cleaners follow structured checklists that include vertical surfaces most DIY routines overlook. 4. Behind and Under Appliances Kitchens are cleaned often — but appliances rarely move. Behind refrigerators, stoves, and washers you’ll commonly find: Grease buildup Food debris Moisture accumulation Dust layers that attract pests According to cleaning industry guidance, these hidden areas should be cleaned periodically to maintain sanitation and prevent long-term damage to flooring and equipment. This is one of the biggest differences between maintenance cleaning and professional deep cleaning. 5. Bathroom Ventilation Areas Bathroom exhaust fans and vents collect moisture, dust, and microorganisms continuously. When neglected: Airflow decreases. Humidity remains trapped. Mold risk increases. Many homeowners clean visible bathroom surfaces but ignore ventilation systems entirely — allowing contamination to circulate back into the room. Professional cleaning includes safe dust removal and sanitation of surrounding areas to support healthier airflow. 6. Frequently Touched Edges and Corners Areas like cabinet edges, stair rail undersides, and wall corners collect oils from hands and airborne particles. These spots darken gradually, making homes look older and less maintained. Because buildup happens slowly, it often goes unnoticed until deep cleaning reveals the difference. 7. Hidden High-Dust Zones Examples include: Behind furniture Under beds Closet corners Air return areas Dust accumulation in these spaces contributes to poor indoor air quality — something the EPA and cleaning industry professionals consistently highlight as a major indoor environmental concern. Regular surface cleaning alone cannot address these hidden zones. Regular Cleaning vs. Professional Cleaning: The Real Difference Most homeowners clean based on visibility. Professional cleaning follows a systematic sanitation checklist designed to address both visible and invisible contamination. Typical Home Cleaning Focus Floors Counters Bathrooms (visible areas) Quick dusting Professional Cleaning Checklist Includes High-touch disinfection Detail surfaces and edges Hidden dust zones Appliance surrounding areas Ventilation and buildup-prone spaces Cross-contamination prevention methods The result is not just a cleaner-looking home — but a healthier, fresher environment that lasts longer between cleanings. Why Waiting Makes Cleaning Harder (and More Expensive) The longer overlooked areas go untreated: Grease hardens. Dust compacts. Surfaces stain permanently. Deep cleaning requires more time and intensive restoration. What could have been routine maintenance becomes a major cleaning project. Professional service prevents that cycle. Restore the Clean Your Home Is Missing If your home looks clean but never feels completely fresh, the problem is rarely effort — it’s coverage. Professional cleaning targets the areas homeowners don’t have time, tools, or protocols to handle properly. That’s where real results begin. A detailed cleaning doesn’t just maintain your home. It resets it. Schedule your professional cleaning service today and experience the difference between surface cleaning and true deep cleaning.
Read MoreFebruary 6, 2026
Why DIY Cleaning Products Don’t Remove Bacteria
Many homeowners believe that if a surface looks clean, it must also be disinfected. In reality, appearance and hygiene are not the same. While do-it-yourself cleaning products can remove visible dirt, they often fail to eliminate bacteria, viruses, and other microorganisms that affect indoor health. Understanding the difference between cleaning and proper disinfection is essential if you want a truly healthy home. Cleaning vs. Disinfecting: What the CDC Actually Says According to the Centers for Disease Control and Prevention (CDC), cleaning removes dirt, debris, and some germs from surfaces using soap or detergent and water. Disinfecting, on the other hand, uses chemicals specifically designed to kill germs on surfaces. This distinction is critical. Cleaning alone does not kill most bacteria. It only reduces their numbers by physically removing them. Without proper disinfection, many microorganisms remain active on surfaces even after routine cleaning. Why DIY Cleaning Products Often Fall Short Most household cleaning products are formulated for convenience, not medical-grade sanitation. Common issues include: 1. Incorrect product selection Many multi-purpose cleaners are not disinfectants. If a product is not registered as a disinfectant, it is not designed to kill bacteria or viruses. 2. Improper dwell time Disinfectants require a specific amount of time on the surface, known as “contact time,” to be effective. Most DIY users wipe products off too quickly, preventing them from killing germs. 3. Inconsistent coverage DIY cleaning often misses high-touch areas such as light switches, door handles, cabinet pulls, and electronics. These surfaces are among the most contaminated in homes. 4. Cross-contamination Using the same cloth on multiple surfaces can spread bacteria rather than remove it, especially when proper protocols are not followed. The False Sense of Safety in a “Clean-Looking” Home A home can smell fresh and look spotless while still harboring harmful bacteria. According to CDC guidance, microorganisms can survive on surfaces for hours or even days, depending on conditions such as humidity and temperature. This false sense of cleanliness is one of the biggest risks of DIY cleaning. Families may believe their environment is safe when, in fact, bacteria and allergens remain on frequently touched surfaces. Why Professional Cleaning Is More Effective Professional cleaning services follow structured protocols that go beyond visual cleanliness. At Maid Group, our approach includes: Proper identification of high-risk, high-touch surfaces Use of professional-grade disinfectants approved for effective germ control Correct dwell times to ensure disinfection actually occurs Separate tools and cloths to prevent cross-contamination Systematic cleaning sequences designed to reduce bacterial spread This process aligns with CDC recommendations for reducing the spread of germs in residential and commercial environments. Health and Long-Term Benefits of Professional Cleaning Consistent professional cleaning helps: Reduce bacteria and allergens in the home Improve indoor air quality Lower the risk of illness spreading among family members or employees Protect surfaces from long-term damage caused by improper products Maintain a healthier living and working environment year-round These benefits are especially important for households with children, pets, elderly residents, or individuals with allergies or respiratory sensitivities. Why Now Is the Right Time to Hire Professional Cleaning Bacteria buildup increases during colder months when homes are closed off and surfaces are used more frequently. Waiting allows microorganisms to accumulate and spread. Professional cleaning is not a luxury. It is a preventive measure that protects both health and property. Maid Group provides professional residential and commercial cleaning services designed to eliminate bacteria effectively, not just make spaces look clean. Our trained, insured professionals follow proven protocols and use the right products for real disinfection. If you want confidence that your home or business is truly clean and not just visually tidy, schedule your professional cleaning with Maid Group today. The longer you wait, the more bacteria has time to spread.
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