I bought their 4 tubs of their dental powders, opened 1, cats didn't like it, and they refused to honor their money back guarantee. I didn't open 3 of the containers and the most they'd offer me is to give me 25% of my $55.99 back and "let" me keep the unwanted product. I wanted to return it and get my money back, but no dice! I had to go to the credit card company and prove fraudulent sales practices.