Review on 💦 Waterpik WP-100, WP-900 Replacement Kit for Ultra Water Flosser - Oral Hygiene Accessories Pack with 1 Handle/Hose by Michelle Wright

You will be surprised how much dirt and mold collects in the body/brush. Exposure to water and air is the culprit, but there's no other way to deal with it than soaking it in a good detergent from time to time. I took mine apart when the water button didn't work and was mad at the black stuff that had been building up inside since we got it a long time ago. Don't try to be Mr/Ms Fixit as it is impossible to put the plastic back together. If you have any problems, just replace it. A cheap and easy solution that eliminates hidden junk and resets the clock. That and storing Peak in a drawer when not in use. Sitting on a sink exposes it to all sorts of things that could be called disgusting, and having something next to your mouth is the last thing you want. I'm not joking.