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The 9 dirtiest places in your house, according to experts

From the dirtiest surfaces in your home to the overall germiest rooms, appliances and tech devices, here are the top places you need to clean (probably right now).

The 9 dirtiest places in your house, according to experts

What’s the dirtiest place in your house? Dr. Carl J. Fichtenbaum, an infectious disease specialist and professor of clinical medicine at the University of Cincinnati College of Medicine in Cincinnati, says that it’s the people and pets. For that reason, he adds, “The most important things to clean in the home are people’s hands,” says Fichtenbaum. “Washing your hands for 20-30 seconds with soap and water — singing the happy birthday song to measure time — is the best way to prevent the spread of germs.” Val Oliveira, founder and CEO of Val’s Services, a professional cleaning company in Chicago, concurs: “The number one tip to keeping the house clean is: wash your hands as soon as you arrive at home and put things away, such as purses, bags, and shoes.”  

But the dirt doesn’t end there. Read on for expert takes on top dirty spots in your home and what you can do to get rid of the griminess for good.

1. Kitchen counters and handles 

“It is very common to think of the stove and fridge as focal areas to clean,” says Oliveira, “but in fact, countertops and handles need the same care and attention.”

“On the counter, we place lots of produce, rest bags from outside, create coffee stains, leave crumbs and spill liquids,” she explains. “And while we use cutting boards to cut our meats, vegetables and fruits, it is still possible to have a transfer of bacteria.” Oliveira says the same goes when you’re cooking and reach over to open a drawer, getting bacteria or grease from food on the handles. Oliveira advises wiping down these spots with a disinfectant daily.

2. Sponges

While you’re in the kitchen, keep an eye on your sponge, too. “If you start to notice a mildew, musty smell every time you walk into your kitchen, it may be your kitchen sponge,” which can also be home to bacteria, says Juliet Pocali, CEO of Bella Cleaning Inc. in Mineola, New York. Her advice: Run it through the dishwasher weekly, and replace it every month. 

3. Dishwashers, washing machines and refrigerator door seals

“Any time you combine water and soap, like in your dishwasher or your washing machine, buildup is going to happen,” explains Cherry. “Soap and water mix and get trapped in the seals and cause them to become gunky.” And in the fridge, seals can get dirty when food and drinks get caught in them, she says.

To clean these seals, use a combo of warm water, mild soap and a cleaning cloth, Cherry recommends — and try an old toothbrush or soft-bristled grout brush to get “into all the grooves and crevices.” Then, rinse and dry. She recommends repeating monthly.

4. Coffee makers and bottled water dispensers

Pocali says many people use a  coffee maker and bottled water dispenser in their daily routine, but both are  “often an overlooked place when cleaning the kitchen.” That can lead to some icky consequences: If there’s stagnant coffee or water, it can grow “mildew or mold and create an unsanitary odor,” she says. To sidestep it? Clean the coffee maker and reservoir in your water dispenser with a sponge, water and dish soap, Pocali advises. 

5. Faucets

When it comes to keeping faucets clean, we’re specifically talking about cleaning underneath the faucets in the kitchen — an area you should pay particular attention to if you drink tap water or cook with it, says Cherry. “Tap water can contain minerals, like calcium, which will cause a hard, crusty buildup on the faucet screen and surrounding components,” she explains. 

Clear the buildup by scrubbing under the faucet with a grout brush, she advises. “Another option is to put some orange essential oil on an old toothbrush, apply it to the bottom of the faucet and allow it to sit for 15 minutes to break up the buildupThen scrub with a stiff grout brush. Rinse the area thoroughly.” Once the buildup is gone, a weekly scrubbing with an old toothbrush, soap and water should help, she says.

6. The whole toilet bowl

Don’t just pay attention to the inside of the toilet bowl, say cleaning experts. “The toilet harvests bacteria and stains from daily use inside the bowl, but to most people’s surprise the outer bowl and seat is just as important to clean as the bowl,” explains Oliveira, because that’s where dust, stains and grime can accumulate. 

Mary Cherry, owner of Evie’s Cleaning Company in Pearland, Texas also points to the toilet base: “Dust, hair and dirt collect at the base, sides and behind the toilet, leaving the area dirty,” she says. And, because it’s often used by multiple people, “the dirt builds up rather quickly,” she notes.

To clean the outer areas, Cherry recommends a weekly wiping with a dry cloth or paper towel first (since wet dust and hair can be harder to pick up) and then following with an all-purpose or bathroom cleaner.  

7. Bathtubs and showers

“We all love a nice shower to wash the day away and unwind,” says Oliveira. “However, this daily ritual leaves our showers with soap scum, water stains, hairs, dirt, rust and grime over time.” Plus, she adds, “every time you shower, you are redistributing that grime and bacteria on anything that comes into contact with the dirty surface.” 

When it comes to the bathtub, if it isn’t cleaned regularly, the area is susceptible to drainage backups and discoloration. Also important: “If you have a sluggish drain, that dirty water will sit and stick to the sides and button of the tub and collect every time someone showers,” Pocali says. 

Cleaning the tub from top to bottom with a bathroom cleaner and a scrubby should do the trick for everyday dirt, says Pocali. “For more stubborn dirt, you can spray bleach at the top, let it sit for about 10 minutes. Then come back to rinse, followed by scrubbing with bathroom cleaner and rinsing again,” she says. She advises wearing a mask and gloves while doing this.

8. Bathroom rugs

One more troublesome spot in the bathroom: rugs. “Typically, when you clean your bathroom, you pick up the rugs as part of the routine and then place them back on the floor after you’ve mopped,” explains Cherry. But that neglects the rug itself — which can be full of dust, hair, lotions and other products, she says. 

“If you have ever experienced cleaning your bathroom floor only to find hair and particles back on the floor after putting the rugs down, dirty bathroom rugs are the cause.” Combat it by tossing your rugs in the washing machine weekly — and vacuuming in between, she advises.

9. Keyboards and remote controls

Your keyboard may be yuckier than you expected. They can have gunk, hair, dust and more — and since you’re likely using them daily, it’s no wonder it’s one of the dirtiest spots in your home, says Abe Navas, general manager at Emily’s Maids in Dallas.

Cherry categorizes keyboards with other “touch points,” as she describes them, like remotes, light switches and banisters. “Those places tend to be quite dirty because they are touched constantly throughout the day by several people in the home,” she says.

Her advice: “If you are cleaning electronics, like a computer keyboard or remote control, you can use a mixture of 1/3 water and 2/3 rubbing alcohol lightly sprayed on a cloth,” she says. That combo can be used on any of the touch points: Simply clean the spot first (using a toothbrush to get into tough places), and then wipe with the sprayed-on cloth, she says.