Sink drains

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Sink drains have the most germs of any place in the bathroom. During a study by Tufts New England Medical Center researchers showed that sink drains contain more germs than the bathroom toilet seat. An environmentally friendly method of cleaning drains is to pour one to two cups of household vinegar down the drain. Vinegar kills 99 percent of bacteria, 82 percent of mold, and 80 percent of germs (viruses). You can also do this for the tub drain. One cup of household bleach could also be used. Never pour vinegar and bleach together.
Shower Drains

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Soak shower heads every three months in vinegar. This will cut the mildew, mold, dirt, and bacteria that collects on the shower head.
Toilet Lids

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Close those toilet lids ! Every time you flush your toilet bacterial and viral aerosols float around the bathroom for at least two hours. This toilet spray lands on toothbrushes, hand towels, etc… and then is transferred into or onto our bodies. According to Charles Gerba, a professor at the University of Arizona who specializes in environmental microbiology, this is “not just a scare tactic to get men to put the top down.”
Bath Towels

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Hang up bath towels. Spread them out, so that they dry quickly. Germs love moist and dark areas and a crumpled up towel provides just such. Be sure you are changing your hand towels and bath towels after two uses. Dr. Obaji ,on wbztv, suggests using a fresh washcloth each time you take a bath.
Shower Curtains

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Change out shower curtains every 6 months. Mold, mildew, and germs collect on the plastic and cloth. See how to reuse here. Just be sure to wash the shower curtain with two parts vinegar before reusing.
Excess Water

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Wipe the excess water of the floor and countertops after you shower. Pools of stagnant water will cause bacteria that can soak into porous surfaces to breed and multiply.
Mascara

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Mascara should be thrown out after 3-4 months. Most mascara has an antibacterial agent in them, but they only are effective for the shelf life of the product. The wand collects bacteria from the air and eyelashes. The tube harbors these germs and gives them an environment to breed. You can get conjunctivitis or pinkeye from using old mascara. Worse yet, if you happen to scratch your eye, you can get a corneal infection. If the texture or smell changes, throw it out.
Underwear and Soiled Linens

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Wash underwear and any soiled linens separate from other clothes. Make the underwear your last load. You might as well take off your dirty underwear and wipe your face with them, if you wash a towel with underwear. Ecoli from fecal material frequents underwear. Always put a cap full of bleach in with underwear or fecal soiled items to kill any bacteria.
Soap Dishes

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Soap dishes can create “bacterial soup.” The stagnant water sitting in the bottom of a soap dish is full of the germs off your hands and can be one bad concoction. Make sure all soap dishes have drainage slats in the bottom with a second container that can be regularly emptied. Better yet, invest in a liquid soap dispenser.
Rinsing Cup

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A recent study showed that 1/3 of parents admitted that their bathroom does not have a rinsing cup for tooth brushing. This means their little ones are using their hands to scoop up their rinsing water. Another 2 of 5 parents have one “common” use cup. Yikes, this is a nasty one. I can not even count the ways this transfers germs. Invest in those tiny disposable paper cups! To be eco friendly, label a cup for each family member and wash with soap and water daily.
Toothbrushes

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Store toothbrushes in the upright position and away from high traffic areas. This means get those toothbrushes off the countertop. Who wants to brush their teeth after germy hand washing water splashes on it? Put them on a shelf away from sink and toilet. Remember that germs like moist and dark environments. So, avoid enclosing your wet toothbrush in a cabinet. If you do not have a toothbrush sanitizer, wash your toothbrush monthly with soap and water. Discard the toothbrush after three months.