brown teeth

Simba's teeth are a bit discolored in the front. He needs a dental cleaning, which I'm arranging. How do you guys keep their teeth clean? Brushing his teeth is an act of congress and I don't think I'm doing it right. I have been reading about water addictives and so many are unsafe to swallow...

hi all, I've only had hurley 17 weeks old since last saturday, but i noticed that his teeth are quite brown and i think he is missing some, which i thought was a bit unusual, because normally puppies when they're young their teeth are pure white and thought would be the same with kittens...