These seem to work quite well for my dogs. They love all the flavors they've tried. They come to expect either these or whimzees in the morning after they've done their business. Their breath seems to improve with these, but the important part is that this cleans their teeth.
About a year or so ago I lived in an apartment. I was new to living in an apartment and didn't think to put my furbabies on flea medicine. They'd always had their own home, so it wasn't a big concern. Well, they got fleas and I tried this. It did not work. I even tried using this and dipping them and it did not work. I had to bring them to the vet and get real flea medicine.