What to do: Use the sanitizing setting if your washing machine has one (or bleach them). Replace with clean towels every three to four days.
Why: They’re shared by many, and they trap moisture—that’s a recipe for bacteria stew.
Best practices: Spread out wet towels on a bar, where air can circulate, rather than hanging them from a hook, where folds form. Don’t forget to clean the towel bar; it too collects bacteria. And avoid hanging wet towels near the toilet. (Remember that slo-mo spray we talked about?)