I'm a grandmother to a 16 month maltipoo terrier mix who had some bad breath issues. He's not into brushing and other water drop products didn't seem to be helping. For his one year bday I gifted him a box of these grain free greenies and he eats them every day to this day. About 2 weeks into it his breath was markedly improved and remains good. I don't mind his kisses so much anymore :) Really sad to hear about dogs vomiting and having diarrhea but for my little guy he seems absolutely fine.