I use the Nutri-Vet Enzymatic Toothpaste on both Brody and Rhianna with a finger brush that my vet gave me. I try to brush nightly, I have no problem with Rhianna because she knows when I'm getting ready for bed that its her "tooth time" too . . .
I do have to hunt for Brody though . he'll usually hide . . .but they both really like the taste of the Nutri-Vet. I have noticed a lot of improvement in Brody's teeth and breath. Rhianna has awesome teeth with minimal tartar buildup. Brody's are a bit different, but since I've been brushing his teeth have really improved. I wish I started it sooner.