My male cat blocks and gets utis all the time. I’ve tried many different remedies and diet changes over the past year to no avail. I came across this new product and thought I would give it a try. I give my 21lb. Kitty 5 drops a day and so far no blockages. Wish this would have been available sooner as this could of saved him a lot of misery and me a lot of money. Hope this helps someone.” Susan Zimmerman