I just recently purchased the C.E.T. Mini fingertip toothbrush and I can honestly say it is the best toothbrush I have used. The tip is so tiny that it reaches really well into their tiny mouths. I also use C.E.T toothpaste and Petzlife gel. I brush every night before bedtime. They used to hate it and now when they see me with the toothbrush they just come and sit down on my lap and let me brush away.
Here is a link for the toothbrush
Amazon.com: C.E.T. Mini Toothbrush: Home &...