Thanks Deb. That was my gut feeling as well. With other UTI's that they have had I have not seen results for at least 3 or 4 days but this time it seems to be clearing up quickly. May it's just a mild case. He still won't pee in the special litter.......I locked him up in the bedroom yesterday with the LB and when I got home there was nothing. He didn't pee elsewhere (in spite of Richard's advice...) at all and as soon as I opened up the door he raced into the other room and peed in clumping litter.