I have two little rescue mutts. One is a natural chewer and we generally keep her teeth squeaky clean with Nyla bones, raw beef bones... The other is not! When I first adopted her, her breath was...not as dainty as she is. And after her first dental cleaning at the vet, I spent the better part of a year buying everything on the market, trying to find something that she would gnaw on, to help combat the build-up. But, being the princess she is...she doesn't think chewing is ladylike and turned down everything I gave her. I try and get a toothbrush in her mouth, but she hates it and fights it so much, and since she came from abuse in her prior life, I try and keep her distress minimalAt the holidays, I came across a small bag of the blueberry greenies on sale at my local pet store, and thought "well, if she won't eat them, I know my other baby will" and tossed them in the cart to put in her stocking. From the moment we opened the bag, her nose perked up, her tail was wagging her whole body, she grabbed the greenie and took off! Normally, she'd "bury" my latest attempt in pillows and snarl if my other dog came near - even if she didn't want it, she didn't want her sister to have it. But to my (delighted) shock...she immediately started chewing and it was GONE in a minute! She, in no uncertain terms, LOVES them!!! They are now a regular part of our bedtime potty routine - after they come in, they run immediately to the laundry room, and every couple of days, they get a blueberry greenie. Her breath is MUCH better, the tartar is MUCH improved and we may even be able to stretch her yearly cleanings to every 18 months or two years. I'm thrilled beyond words! Please don't ever discontinue these - or I'll be buying a lifetime supply and renting a storage locker for them!