How to Sanitise Your Home — Room-by-Room Guide | Simply Maid

You wiped the benchtops, mopped the floors, and even scrubbed the bathroom sink. But here's a question worth sitting with — is your home actually *hygienic*, or does it just *look* clean? Because there's a real difference, and it matters more than you might think.

**Quick Answer:** To make your home more sanitary, focus on targeted hygiene — cleaning the right surfaces, at the right time, in the right way. The kitchen is typically the germiest room in the house (not the bathroom). Wash bedding and towels weekly at 60°C or higher, disinfect high-touch surfaces like door handles and light switches regularly, and replace kitchen sponges every one to two weeks. You don't need to disinfect everything daily — a general-purpose cleaner handles most everyday cleaning.

Cleaning vs Sanitising — Why It Matters

Before diving into each room, it's worth understanding the difference between cleaning, sanitising, and disinfecting. They're not the same thing.

According to [Professor Sally Bloomfield](https://www.lshtm.ac.uk/newsevents/news/2009/goodhygiene.html) of the London School of Hygiene & Tropical Medicine, "Whereas cleaning means removing dirt and microbes, hygiene means cleaning in the places and times that matter — in the right way — to break the chain of infection."

**Cleaning** removes visible dirt and some germs. **Sanitising** reduces germs to a safe level. **Disinfecting** kills most germs on a surface. For everyday household hygiene, regular cleaning with soap and water is enough for most surfaces. Save disinfecting for the areas that genuinely need it — which is exactly what this guide covers.

Your Kitchen — Surprisingly, the Germiest Room

You might assume the bathroom is the dirtiest room in your house. But according to the [NSF International Household Germ Study](https://www.nsf.org/consumer-resources/articles/germiest-items-home), the kitchen takes that title by a wide margin. Over 75% of dish sponges and rags tested positive for Salmonella, E. coli, and faecal matter — compared to just 9% of bathroom tap handles.

Here's how to keep your kitchen truly hygienic.

Sponges and Tea Towels

Your kitchen sponge is likely the germiest item in your entire home. [Research from the USDA](https://www.ars.usda.gov/news-events/news/research-news/2007/best-ways-to-clean-kitchen-sponges/) found that microwaving a **wet** sponge for two minutes kills over 99% of pathogens. But sponges recolonise with bacteria quickly. The better long-term approach is to replace your sponge every one to two weeks.

**⚠️ Safety note:** Always ensure your sponge is thoroughly soaked with water before microwaving. A dry sponge can catch fire. — [USDA Agricultural Research Service](https://www.ars.usda.gov/news-events/news/research-news/2007/best-ways-to-clean-kitchen-sponges/)

Launder tea towels after every day of heavy kitchen use, or at minimum every few days. The USDA recommends daily changes for towels used around food preparation.

Benchtops, Sink, and Chopping Boards

Wipe down kitchen benchtops with a general-purpose cleaner after every meal preparation.
Clean and rinse your kitchen sink daily — it harbours more bacteria than you'd expect.
**Disinfect your chopping board** after preparing raw poultry or meat. Use separate boards for raw meat and fresh produce.

Fridge, Stovetop, and Cabinets

Deep clean your refrigerator every three to six months, with weekly checks for expired food and fortnightly wipe-downs of shelves and drawers.
Keep your stovetop clean — wipe up spills as soon as they're cool to touch.
Check underneath your kitchen sink and surrounding areas for [mould](/cleaning-101/bathroom/a-comprehensive-guide-to-mould-removal), especially in humid climates.
Clean out kitchen cabinets and organise them once a year.

Floors

Sweep and mop the kitchen floor daily with warm water and a general-purpose cleaner. You don't need to disinfect the floor every day — the [CDC recommends](https://www.cdc.gov/hygiene/about/when-and-how-to-clean-and-disinfect-your-home.html) reserving disinfectant for when someone in the household has been ill or after a raw-meat spill.

For a more detailed approach, see our [systematic kitchen cleaning guide](/cleaning-101/kitchen/a-systematic-way-to-clean-your-kitchen).

Your Bedroom — Where You Spend a Third of Your Life

You spend roughly eight hours a night in bed. That's a lot of time generating sweat, shedding skin cells, and creating the warm, damp conditions bacteria love.

As [Primrose Freestone](https://theconversation.com/heres-how-often-you-should-wash-your-sheets-according-to-a-microbiologist-187709), Senior Lecturer in Clinical Microbiology at the University of Leicester, explains: "Fresh sweat may be odourless, but bacteria on our skin, particularly staphylococci, break it down into smelly byproducts."

Bedding

**Wash your sheets weekly** at 60°C or higher to kill bacteria and dust mites. Every two weeks is the absolute minimum.
Wash blankets and duvet covers fortnightly.
Air your mattress in sunlight when you can — it helps with moisture and odour. But for thorough sanitisation, combine this with vacuuming and an allergen-barrier encasement. A typical mattress can harbour 100,000 to 10 million dust mites, according to [Hygiene for Health Australia](https://hygieneforhealth.org.au/home/).
[Deep clean your mattress](/cleaning-101/bedroom-living/how-to-clean-a-mattress-and-get-rid-of-stains) at least once a year.

Daily Habits

Avoid bringing shoes worn outside into your bedroom.
Don't leave worn clothes lying on the bed. Use a coat rack or hook for items you plan to wear again before washing.
Clean underneath and behind your bed regularly — dust bunnies form quickly in these hidden spots.
Avoid eating in the bedroom. Crumbs attract ants and other pests, which bring bacteria along with them.

Your Bathroom — High Moisture, High Risk

The bathroom is a breeding ground for mould, mildew, and bacteria thanks to constant moisture and warmth. According to [Hygiene for Health Australia](https://hygieneforhealth.org.au/home/), "Flushing the toilet sprays bacteria and viruses into the air, which may float around for two hours after each flush."

Toilet

Clean and disinfect the toilet bowl once or twice a week. Wipe down the seat, lid, and flush handle two to three times a week — or daily if someone in the household is unwell.

**Tip:** Close the lid before flushing to reduce the aerosol spray of bacteria.

Shower and Bath

After showering, squeegee glass and tiled walls to remove standing water, and turn on the exhaust fan or open a window. This starves mould spores of the moisture they need to grow. Deep clean your shower curtain or door with hot water and soap monthly.

Do routine checks for [mould in your bathroom](/cleaning-101/bathroom/a-comprehensive-guide-to-mould-removal) — around grout lines, ceiling corners, and window ledges.

Sink and Fittings

Don't just clean the basin — wipe down the splash zone around the sink where toothpaste, soap, and water droplets accumulate. These damp spots harbour bacteria that's easy to overlook.

Clean the mirror and medicine cabinet weekly.
Disinfect all [bathroom fittings and fixtures](/cleaning-101/bathroom/8-bathroom-cleaning-hacks-that-will-save-you-time-and-money) once or twice a week.
Wipe down towel racks with a disinfectant wipe.

Towels

Wash bath towels at least once a week, and hand towels every few days. As [Dr. Alok Vij](https://health.clevelandclinic.org/how-often-should-you-wash-your-germ-magnet-of-a-bath-towel), a dermatologist at the Cleveland Clinic, puts it: "The longer the towel stays damp, the longer the yeasts, bacteria, moulds and viruses remain alive and stay active." In humid Australian climates, consider washing bath towels every three to four days.

Your Living Room — The Overlooked Spots

The living room sees a lot of traffic — meals on the couch, kids playing on the carpet, guests touching cushions and remotes. While most people keep the visible surfaces tidy, it's the hidden spots that need attention.

Upholstery and Carpets

Upholstered sofas absorb sweat, body oils, dead skin cells, and food particles — creating conditions for bacterial growth. Deep clean your upholstery every three to six months, or more often if you have pets or young children.

Carpets can harbour significant amounts of bacteria, dust mites, and allergens. Vacuum at least twice a week with a HEPA-filter vacuum, and have carpets professionally deep cleaned every three to six months.

If you have pets, stay on top of flea and tick treatments. These parasites don't just bother your pet — they live and breed in carpet fibres too.

Hidden Spots

Check behind furniture and wall hangings for mould, particularly in rooms with poor ventilation.
Window tracks can accumulate dust, moisture, and mould — especially in Australia's humid climates. Vacuum these tight spaces and wipe with soapy water.
Clean up food spills and crumbs immediately to prevent bacterial buildup.

Don't Forget These High-Touch Germ Hotspots

Some of the germiest surfaces in your home aren't tied to any particular room — they're the things you touch dozens of times a day without thinking. Make a habit of wiping these down with a disinfectant wipe two to three times a week:

**Door handles and knobs** (including cabinet pulls and drawer handles)
**Light switches**
**TV remotes and game controllers**
**Phone screens and keyboards**
**Staircase railings**
**Tap handles**
**Toilet flush buttons**
**Appliance handles** (fridge, oven, microwave, dishwasher)

Every household has its own unique set of frequently touched surfaces. If you exercise at home, add your gym equipment to the list. If you work from home, don't forget your desk, mouse, and keyboard.

You might have tried cleaning routines and checklists to stay on top of all this — only to abandon them within a few weeks when life got in the way. The key isn't perfection. It's building a few consistent habits into your daily rhythm. A [quick nightly routine](/cleaning-101/uncategorized/a-quick-nightly-cleaning-routine-for-a-better-tomorrow) can make a bigger difference than a weekend marathon clean.

Frequently Asked Questions

Q: What is the germiest room in the house?

The kitchen — not the bathroom. According to NSF International's household germ study, kitchen sponges, sinks, and chopping boards consistently harbour more bacteria (including E. coli and Salmonella) than any bathroom surface. Focus your disinfecting efforts on kitchen items that come into contact with food.

Q: How often should I wash my bed sheets for hygiene?

Wash your sheets weekly at 60°C or higher to kill bacteria and dust mites. Every two weeks is the absolute minimum. If you sweat heavily at night, have allergies, or share your bed with a pet, consider washing more frequently.

Q: Is there a difference between cleaning and disinfecting?

Yes. Cleaning removes visible dirt and some germs using soap and water. Disinfecting kills most germs on a surface using chemicals like bleach or hospital-grade disinfectants. For everyday home hygiene, regular cleaning is sufficient for most surfaces — reserve disinfecting for high-risk areas like the kitchen sink, toilet, and surfaces touched during illness.

Q: Do I need to disinfect my floors every day?

Not unless someone in your household is unwell. The CDC advises that daily disinfection isn't necessary in healthy homes. Sweep and mop with warm water and a general-purpose cleaner daily in the kitchen, and weekly in other rooms. This keeps your floors clean without unnecessary chemical exposure — particularly important if you have babies or toddlers crawling on the floor.

Q: Is microwaving a kitchen sponge safe?

Yes, but only if the sponge is thoroughly wet first. USDA research confirmed that microwaving a saturated sponge for two minutes kills over 99% of bacteria. Never microwave a dry sponge — it can catch fire. That said, sponges recolonise with bacteria quickly, so replace yours every one to two weeks regardless.

Sources & References

**Professor Sally Bloomfield**, Honorary Professor, London School of Hygiene & Tropical Medicine — [Good Hygiene Practices](https://www.lshtm.ac.uk/newsevents/news/2009/goodhygiene.html). Referenced for the distinction between cleaning and targeted hygiene.
**CDC (Centers for Disease Control and Prevention)** — [When and How to Clean and Disinfect Your Home](https://www.cdc.gov/hygiene/about/when-and-how-to-clean-and-disinfect-your-home.html). Referenced for guidelines on when home disinfection is necessary.
**NSF International** — [Germiest Items in the Home Study](https://www.nsf.org/consumer-resources/articles/germiest-items-home). Referenced for kitchen vs bathroom bacteria data.
**USDA Agricultural Research Service** — [Best Ways to Clean Kitchen Sponges](https://www.ars.usda.gov/news-events/news/research-news/2007/best-ways-to-clean-kitchen-sponges/). Referenced for microwave sterilisation effectiveness and sponge safety.
**Primrose Freestone**, Senior Lecturer in Clinical Microbiology, University of Leicester — [How Often You Should Wash Your Sheets](https://theconversation.com/heres-how-often-you-should-wash-your-sheets-according-to-a-microbiologist-187709). Referenced for bedding bacteria and wash frequency.
**Hygiene for Health Australia** — [Home Hygiene](https://hygieneforhealth.org.au/home/). Referenced for dust mite data and toilet aerosol spray.
**Dr. Alok Vij**, Dermatologist, Cleveland Clinic — [How Often to Wash Bath Towels](https://health.clevelandclinic.org/how-often-should-you-wash-your-germ-magnet-of-a-bath-towel). Referenced for towel hygiene and bacterial growth in damp conditions.

*If keeping on top of home hygiene feels like one thing too many, our friendly team is always here to help.*

*Thoughtful care for the spaces that matter most.*

How to Make Your Home Truly Hygienic — A Room-by-Room Sanitisation Guide