This was easy to use and administer. I really like the fact that Pam muscle-tests the cats to determine precisely how much to give, that she sends only the number of tablets that are needed, and that she provides directions regarding how to give it. I was also pleased to find a trusted source for this product. I was surprised that the pellets did not dissolve in water until I crushed them with a stainless steel spoon. I hope it was okay to do that. There did not seem to be any mailing options other than expedited shipping, which is a little expensive if one doesn't need the product right away.