7 Ways to Use Old Toothbrushes

What happens to your old toothbrush when it’s ready to be put to pasture? The American Dental Association suggests replacing your toothbrush every three or four months, or sooner if the bristles start looking frayed. And if you’ve had a cold or the flu, the University of Arkansas for Medical Sciences advises tossing your brush in favor of a new one. That means you’re sending at least three or four…

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