On principle as they hurt a lot of dogs with their old product and it took them to long to admit an issues, I do not use them at all.
There are a few other choices... Budda bones, Nylabone as well but always make sure they say edible and digestable... just cause a dog can eat it does not make it good for it tummy to digest.
Another choice I found a like is N-Bone not the same as nylabone it carries a variety of different chews that are wheat free and both edible and digestible.
NPIC: Home
Pearly White, Twistix, bone a mint be some, I have used of their line.
I have used all of them and really like the twistix do to the size they come small and also are a little softer then the others for tiny teeth.
I only feed one a day as well really if fills them up but it not food it just for teeth health and mental health not nutrition.
JL