It's a hard call. Going to have this convo with my vet in a couple days..again. If I thought E was getting anything beyond a tiny piece here and there, I'd immediately take them away. I'm not so concerned about Ry. I don't give anything unless I'm in the same room and I stop them periodically to check the chews.
Pretty much either have tooth break risk or obstruction risk. I guess obstruction risk is more severe, but teeth issues can get really nasty too. Ry's toofers can break - he's insured. LOL. But E's teeth, not so much.
My vet has a special interest in dentistry and gets a lot of the miserable tooth cases around here. Going to see what she thinks breaks teeth the easiest. I know she has mentioned ice, Nylabones, and bullies do too. No give = terrible for teeth. I don't trust the Hartz company and don't want to give them $$ if possible. But then I don't trust any of them.