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Bathrooms are weird, man. They’re where we go to get clean, and yet they are also breeding grounds for germs, bacteria and every other bit of grossness life has to offer. Seriously, why did we think putting showers and toilets in the same room was a good idea? Even the towels we use to dry off after a good scrubbing…how sanitary are those, really? Are we really washing them enough to prevent us from just rubbing dead skin cells, soap residue, yeasts, and other forms of gunk all over our freshly cleaned bodies?

Many, if not most of us probably throw our towels in the wash once a week. Which, assuming you’re showering daily, would mean after about seven uses. However, a good rule of thumb according to several scientists and laundry experts is to wash towels after every 3-4 uses. For those that only wash their towels once a month, or once a season, or even once a year…buckle up.

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Why changing bath towels is important

Considering that our towels usually don’t show signs of contamination, this might seem like overkill. But what we aren’t seeing are the pathogens that get transferred onto the towel—by our skin, airborne fungi, and yes…bits of human waste…of the fecal sort. Here’s a kindly reminder to always put the seat lid down before flushing.

Interestingly enough, all of these invisible creepy crawlies create a microbial community that, according to a 2023 article in Scientific Reports, is unique from the ones that form on our clothes or bedsheets. And depending on what type of microbial community develops on them, dirty towels could put you at risk for contracting everything from athlete's foot to an eczema flare-up to pink eye or staph (MRSA), just to mention a few. Point being—it’s more than just potentially having a bathroom filled with smelly towels.

Other towel tips

Make sure your towel properly dries between uses

Even if you’re throwing the towel into the hamper to be cleaned, a good rule of thumb is to have it completely dry first in order to avoid funky odors. If your bathroom’s humidity lingers, it might be worth considering moving them to dry elsewhere.

Clean more often if…

…you’re dealing with sickness, a damaged skin barrier due to a rash or open cut, or shower multiple times a day.

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Wash towels the right way

Use a hot water setting and dry on high heat. Ideally, choose a detergent with enzymes to really break down the grime, and consider adding liquid bleach or laundry products with activated oxygen bleach. Obviously, if that doesn't agree with your skin, disregard. But perhaps vinegar is a gentler yet still effective substitute.

Consider skipping anything besides detergent and bleach

While things like fabric softener and scent beads give off a luxury feel, they can also form a lingering residue that only makes the towel more of a breeding ground for germs.

Don't forget to wash your washing machine

Yes, the very device used to remove the bio gunk from our fabrics can be spreading them when not properly sanitized. Every so often, run a cycle without clothes, using bleach or a special formula for cleaning washing machines.

Replace towel every 3 years, and choose wisely

One hundred percent linen towels are naturally moisture-wicking, meaning they dry much faster and are therefore less likely to breed bacteria between uses! But no matter which type of towel you go with, wash before use. Yes, it’s hard to say goodbye to that oh-so soft texture, but the chemicals used to create that texture aren’t always great for us anyway.

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What about other types of towels?

Some towels—like the ones we use for the gym or wiping down the kitchen—are exposed to even gnarlier environments, and require different protocols. Workout towels for instance, which basically get covered in sweat and then sit in a gym bag for hours, need to be cleaned after only one use.

Similarly, past research has found that dish towels house a substantial amount of coliform bacteria E. coli bacteria, which can lead to food poisoning. The fact that many of us simultaneously use a kitchen towel for wiping down surfaces, dishes, and our own hands, certainly doesn't help things. Luckily that same research also showed towels that were washed within three days had less E. coli than those that went more than four days without washing. So, wash kitchen towels at least as often as bath towels, but daily if you’re using them to wipe up spills. Also designate specific towels for specific purposes—one for drying dishes, one for hands, etc..

The bottom line

Of course, there might be environmental or financial reasons for not wanting to wash towels often. And many might continue on with their current laissez-faire routine and suffer no consequences. But this is a good reminder that the essential tools used in our everyday lives require some TLC to keep things running smoothly, and hygienically.