I bought this for my dog who had bad plaque and I was worried. For myself, weighing the risks, I would never do a teeth cleaning for my dog, too many horror stories but that's me. Anyway, lightened up her bad dark molars right away, but she does not like it sprayed at all, I got the Peppermint and a dropper bottle from the health store and poured some in the dropper bottle. I fill up the dropper pretty much and then when I am lucky, I squirt it in - making sure no food or water for 30 min. Before and after. I have to keep doing this because I just got rid of the infection the vet wanted to charge me a fortune to treat.