Mine never get theirs cleaned I recently had Zeke in for an appointment, and 2 of his molars at the back of his mouth had quite a bit of buildup. I asked if he should get a cleaning and the vet said he only has the 2 teeth needed to be cleaned and it doesn't make sense to put him under for that. So he decided to try scraping them while he's awake to see if he's tolerate it...Zeke didn't seem to mind at all. He was such a good boy. Most of the stuff to scraped off and saved getting them cleaned. I don't think he even charged me for it!