SENTRY® HC Petrodex® Dental Dog Water Additive
Not compatible with fountains
Note: I bought a product by the same company, and with all the same ingredients, that was advertised as being for both cats and dogs. Said product is no longer listed on Petsmart's website, but this is substantially the same item.
I didn't notice any real difference mouth odor with this product. Not only does it not really work, it also foamed up quite a bit in our Drinkwell fountain. When I took the fountain apart to clean it, I found it was clogged with a jelly-ish goo that was cloudy with black flecks and smelled horrible. This had never happened before, so I can't help but blame the water additive.
Bottom line: this item is somewhere between useless and actively problematic. Can't recommend it at all.
April 13, 2014