The 10 Places in Your Home Where Harmful Bacteria Lives

harmful bacteria

Bacteria should always be taken seriously since it can have grave consequences. These are the 10 places that contain harmful bacteria.

Wet towels, undraped toothbrushes, toys scattered on the floor are “perfect environments” for the growth of fungi and harmful bacteria. According to the latest studies, the toilet is the place with most germs in the home. However, being one of the most frequently cleaned, other points of the homes end up accumulating more microorganisms.

According to numerous studies, this is the ranking of these areas that are not given enough attention and could put at risk the health of the inhabitants of the house.

The Toilet

harmful bacteria in toilets

Considering its function, not many will be surprised that the toilet probably has the highest amount of harmful bacteria. However, recent studies show that there are even more places that hide germs and we are not even aware of it!

Read Also: How To Disinfect Your Bathroom With Bleach

The Sink

The kitchen sink concentrates up to 100.000 times more bacteria than the regular bathroom sink. This is due to the fact that we leave our plates for a prolonged period and don’t wash them immediately. Even doing so, there are tiny food leftovers, which get stuck in the drain and remain for a long time. This is how the harmful bacteria multiply without us noticing.

Taps, Bathtubs, Washers, Refrigerator

As in the case of the sink, moisture and organic matter accumulated in these areas create a perfect environment for bacteria to grow.

In the gums of the washing machine and the refrigerator, for example, it is not unusual for mold to be generated. They usually have grooves that are difficult to clean, and, therefore, they are not disinfected.


harmful bacteria in toothbrushes

The oral cavity hosts hundreds of microorganisms that can be transferred to the toothbrush during use. These include staphylococci; coliform bacteria, Pseudomonas, yeast, intestinal bacteria and fecal germs. It is recommended to change your toothbrush at least once a month and it is mandatory to do it when you are sick.


You dropped the piece of bread on the floor but decided to eat it the same. Of course, you blew hard to eliminate any speck of dust before putting it in your mouth.

Well, according to this study, that would not be enough precaution. And is that the floors of the house are one of the sites with more microorganisms, says the study. Many of them we bring from the street, in our shoes.

In addition, experts in microbiology warn that bacteria need only ten seconds to colonize the object that falls to the ground.

Cutting boards

It is not advisable to use the same table for cooked and raw foods.

Up to 20% of food infections are contracted at home. The pathogens that often cause them are salmonella, Escherichia coli, and Campylobacter. These can accumulate, as indicated above, in the refrigerator rubbers and wet cloths. To avoid this, it is convenient to disinfect them frequently.

Sponges and Kitchen Towels

harmful bacteria in sponges

How often do you change your sponge? Moisture is the best place for harmful bacteria. Usually, we feed bacteria daily and then we eat from plates previously washed with an old sponge. Thus doctors and other professionals advise changing the sponge on every second day.

Technological devices

Studies warn that the keyboard of a computer or the screen of a cell phone can have up to 30 times more microorganisms than a toilet.  It is because the touch screens of telephones and other devices, but also remote controls, keyboards in general, and video consoles are in constant contact with our hands.

If your job requires touching electronics all the time, it is advisable to use gel sanitizer for hands and to disinfect the equipment every day. This will prevent harmful bacteria from multiplying.

Door Knobs and Handles

I bet you almost never clean your door knobs and handles. But here is where harmful bacteria mostly are. In public places, thousands and thousands of people touch these knobs daily, which is also important to have sanitizer right next to your hands.


harmful bacteria in toys

Kids usually play with toys on the floor. And the floor is where most of the harmful bacteria accumulate. This can be really harmful to the kids since they usually put their toys in their mouth. 80% of the cuddly toys harbor harmful bacteria, while one in four contaminated with feces. It is advisable that you clean the area where kids play, however, you should not use hard chemicals in the process.


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