Squeezable Homemade Toothpaste-I'm a bit nervous about making this b/c I didn't know there were 2 types of betonite clay. Sodium calcium. I have the sodium. It also said not to put the betonite clay with any metal. I have a rechargeable toothbrush that I use and is a bit nervous about using that. I don't want to risk messing up my toothbrush. I still want to try this though.