I asked a similar question a while back on here regarding a toothbrush with an esp inside. I think one of the answers I got captured it nicely: https://www.yout

I asked a similar question a while back on here regarding a toothbrush with an esp inside. I think one of the answers I got captured it nicely: https://www.youtube.com/watch?v=TQ4W7yB9Mow https://www.youtube.com/watch?v=TQ4W7yB9Mow