"My dog loves these antlers. She's 6 and I'm having a real issue with plaque. I've tried several different types of bones but they splinter. She has a health issue that prohibits me from having her put under for a dental cleaning at our vets. I brush her teeth most days but I have issues with her sitting long enough to clean her teeth well. These chews did a really good job of getting a lot of the plaque off. The chew was gone in 4 days but she chewed it almost non stop every day. Now that her teeth look so good I'm not going to let her keep the next one. I'll let her chew an hour or two then take it away for a couple of days. Also it left a stain on a rug but it looks like it will wash out."