Has anyone else heard of or tried Plaque Off? It is a seaweed based product and seems to work. I've only used it for about 4 days and can already tell a big difference in doggy breath. Here is a link to their web site http://www.plaqueoff.com/proden_plaqueo ... animal.htm
I noticed on the home page that a similar product is available for people. It is also at Amazon. I was lucky in that my neighbor gave me some to try. For under 25# s you use a very tiny amount less than 1/8 teaspoon. Will see if it does anything for plaque before I schedule a cleaning for the little ones. They seem to need it every year $$$$