8 Things in Your Home That May Be Harming You

1. Your kitchen sponge

Maybe you’ve heard about the germs on your kitchen sponge (gross news flash—there may be as many as 20 million microbes on it right now). But here’s the deal: Your method for “cleaning” that sponge may be leaving it loaded with potentially hazardous bacteria that can make you ill. Researchers at the USDA’s Agricultural Research Service found that some common cleaning methods for sponges—soaking them in a bleach solution, lemon juice or water—did not eradicate the germs.

What to do The best ways to clean a dirty sponge, they say, are in the microwave (on high for one minute) and in the dishwasher, which will kill 99.9 percent of all germs.

2. Your bed

Have you been on a trip recently? If so, you may have brought home some hitchhikers—of the creepy-crawly variety. Bedbugs, tiny bloodthirsty insects, are hosts to organisms that cause hepatitis B and Chagas disease, say health experts. But the real problem seems to be the infections and allergic reactions that can sometimes result from bedbug bites.

According to the Environmental Protection Agency, bedbugs are on the rise and becoming an increasing health problem. The insects, which hide in the crevices of mattresses and bedding, are showing up everywhere, from hostels to the swankiest hotels, and they often find their way into people’s luggage, transporting themselves to unsuspecting homes.

What to do If you’ve done some traveling recently, and especially if you’ve noticed any mysterious bug bites, wash everything in your luggage and consider scrubbing your suitcase with a stiff brush before giving it a good vacuuming.

3. Your laptop

You’re the only one who uses it, so how dirty can it be? In a word: filthy. A study by researchers at the University of North Carolina Health Care System found that keyboards were loaded with germs.

Even more disgusting, the average public toilet bowl contains 41 germs per square inch. The average personal keyboard? Some 21,000 germs per square inch. “Toilet bowls get cleaned,” says Philip M. Tierno Jr., Ph.D., director of clinical microbiology and immunology at New York University Langone Medical Center, “but keyboards rarely do.”

What to do

Tierno says the best way to keep your laptop or computer’s keyboard clean is to gently wipe it down daily with disinfecting wipes.

4. Your shower curtain

According to research by the Center for Health, Environment & Justice, shower curtains and liners made from polyvinyl chloride (PVC) may be harmful to your health.

Their study suggests that PVC releases potentially harmful chemicals into your bathroom. While there is still some debate among health experts about how much of these chemicals could be deemed harmful, many believe that limiting your exposure to chemicals, wherever possible, makes sense.

What to do Check your shower curtain’s label to see if it’s made of vinyl or PVC. While not all manufacturers disclose this information, some retailers, like Ikea, have banned PVC shower curtains altogether, and Target has promised to phase out the material in its shower-curtain products in the months ahead.

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