![Went to brush my teeth this morning with my battery powered electric toothbrush and the rubber grip grew a bubble overnight. What happened here? : r/whatisthisthing Went to brush my teeth this morning with my battery powered electric toothbrush and the rubber grip grew a bubble overnight. What happened here? : r/whatisthisthing](https://external-preview.redd.it/Yb-mWXR_gZ4Lwoz95TDvTbKUet0rif8JGiUMzcvyiF0.jpg?width=640&crop=smart&auto=webp&s=d63734290ba4f0c39b115186ddb27ff4a9203e6e)
Went to brush my teeth this morning with my battery powered electric toothbrush and the rubber grip grew a bubble overnight. What happened here? : r/whatisthisthing
![Does anyone know the best way to clean my boyfriend's electric toothbrush? The black is a ring of mould, but obviously it goes in his mouth and is electric so I'm wary Does anyone know the best way to clean my boyfriend's electric toothbrush? The black is a ring of mould, but obviously it goes in his mouth and is electric so I'm wary](https://preview.redd.it/cn5tbt95mqv31.png?auto=webp&s=6e5f11da7ec3bfc4855061b1fdbd0dbd87d44eee)
Does anyone know the best way to clean my boyfriend's electric toothbrush? The black is a ring of mould, but obviously it goes in his mouth and is electric so I'm wary
![Cute Cat U-Type Electric Toothbrush for Kids Whitening Massage U-shaped Toothbrush with 2 Brush Heads Cartoon Modeling Cute Cat U-Type Electric Toothbrush for Kids Whitening Massage U-shaped Toothbrush with 2 Brush Heads Cartoon Modeling](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51lQzJjjUoL._AC_UF1000,1000_QL80_.jpg)