Does anyone use this? If so, are the results really as good as shown in the pics on their website?! My sons 11 year old GSD has awful teeth, she's a rescue and was fed utter crap before my son took her on three years ago She has alot of tartar on her teeth but vets are reluctant to put her under for a dental because of heart problems and raw bones, which I'd use to clean teeth, run straight through her. My son has tried brushing her teeth, plaque off and logic gel, all with little to no success. I've just come across this Petzlife oral gel and it almost seems to good to be true (and lets face it, things which seem it, generally are!) so just looking for some first hand experience. If anybody does use it with success, where’s the cheapest place to purchase? Thanks very much.