Warning, scary question ahead: How often do you change your toothbrush? The American Dental Association recommends replacing it every three months, by then the bristles are worn down and a colony of germs have formed. Not a pretty sight.
But don’t toss that toothbrush into the trash just yet. We have ten ingenious ways to put old toothbrushes to good use, doing everything from polishing a diamond ring to cleaning fish tanks!