I have never used this product, but it sounds like the results are the same as Life for Teeth. The site that I pulled up showed a cost of $60.00, so Life for Teeth is cheaper - you can choose between the spray or the gel. Right now it is peppermint flavored, but they're coming out with a liver flavor. I also like the sound of the ingredients better - the active ingredient is grapefruit seed extract which is a natural antibacterial.
http://www.petzlife.com/
I actually just ordered the Life for Teeth (free shipping) and have had it sitting on my counter for over a week now, but have yet to use it. I have a Yorkie rescue I want to get a before picture on since she has tartar so I can post the results in the future. I bought the gel and the spray just to see which was easier.