My guys are on Royal Canin urinary tract wet food - and were on the dry as well. I hear that RC is supposed to taste better, or something. Find out if it will work on both types of crystals. Medi-Cal Dental is supposed to prevent crystals - my vet told me he had just read some studies.

Check with your vet on the RC.

I also mix the wet with a bit of very warm water - more moisture, and a nice stew for the boys!

Pet stores carry Royal Canin...but you want to be sure the formula is the same.

I am glad to hear a diet change may do the trick for Grady.