Hi,
The spray has a high Amazon (web based retailer in USA) rating showing a 4 out of 5 rating with rave reviews from many of the over 500 customers. The link is very complex for Amazon directly to the product and reviews, but it an be found going to:
http://www.amazon.com/
and put petzlife in the search field.
Amazon may support international business, I don't know and I believe the product is available in many USA based pet stores too. It may be available internationally it is labeled Made In USA.
I see some improvement but the fangs are not sparkling white.
As I said two people I know who have dogs say they think it a good tool, not sure it completely replaces brushing.
That spray sounds interesting. I have never heard of it. Of course it might not be available in the UK (where I live)
So, what are the reviews like for that spray? It sounds like a good way to prevent plaque and tartar build-up. Easier than brushing I guess. My dog HATED having her teeth brushed (which we did 3-4 times a week)
I suppose you could see results of using the spray after a week or so, by inspecting his teeth....