Bentonite Clay Tooth Powder
Just apply to wet toothbrush and brush
Bentonite clay can be found in the beauty isle of the health food store, it's usually used to make masks for facials, but I use it to brush with. The first time I used it, I felt like I'd just had my teeth cleaned and whitened by the dentist.
I use it everyday on my two year old too because it's hard to find toothpaste that doesn't have SLS, or Fluoride.