Hi Bonnie..Welcome to Pet Talk.

I've always fed my cats (four persians) Royal Canin. Last year Tinkerbelle got a nasty UTI. Hers was very difficult to treat and the vet wanted her to eat Science Diet only. Trouble is she wouldnt, all the others would but not her. During the course of trying to get rid of her UTI, the vet mentioned she was one cat that should not be exclusively on a dry food diet. I feed them all Royal Canin Oral Sensitive now, before they were on the Persian Formula.

Having said that, she has not had a recurrance, however, Kewpie got one three weeks ago, for no apparent reason. I believe we have her all clear now but she will be retested on Monday.

Something I have noticed, I dont see mine drink much, except they all come running when I wash and refill the dish which I am doing three/four times a day now, but they seem to be drinking more that way.

The vet told me that sometimes these are idiopathic, as in there is no specific pinpointable cause. Neither have crystals.

So myself, if it's not recurring over and over I'm hoping it could just be a one time deal.

I give them also one pouch (per four cats) in the morning of Whiskas wet, and one before bed.