I remain cautiously optimistic, but heavy plaque deposits are gone or greatly reduced in all but the farthest back upper teeth in the two "younger" dogs, ages 12 and 7. The other dog is a twenty two or more year old Maltese mix. She has lost several teeth and I am wondering about exactly Where the plates of brown stuff are attached. Her breath is good, her dental sensitivity is less, and she eats well. I remain cautiously optimistic. That dog, at about 12 pounds, gets two heaping scoops of ...