Which ones are unsafe? The article highlights the ones marketed under names like Gumma-Bone and Plaque Attacker.

I think this may be one of the most important lines in the article though.....

However, all polyurethane dental dog bones, regardless of manufacturer, can present problems when they are inappropriate in size and have become old and worn.”

I personally do not give my dogs Gumma-Bones because they are aggressive chewers and disenigrate them in minutes. I do occassionally give them a flavored NYLABONES. These are especially made for aggressive chewers and do not come apart in pieces.

My suggestion....you need to know your dogs chewing needs and determine what is safe and what is not. And most importantly, monitor your dogs chewies and when they become worn or unsafe, discard them immediately. Stay away from Gumma Bones or any brand similar to it. Same for Plaque Attacker!

[ November 27, 2001: Message edited by: Dixieland Dancer ]