If you have a big dog that contains strong bite, get the sturdier and stronger dental chews. And then, we must go through about 4 of these things, 8 when he has to do the whole set every 4 or 6 changing times. Like many americans my age, I matured with having a positive association to fluoride. https://Nerdsmaster.com/groups/how-to-groom-puppy-at-home/