I seem to remember some correlation between UIT and Hairball Lite food but
googled and couldn't find it. It was quite a while ago that I thought I saw
the comments so my memory might be faulty.

My Isabelle has started peeing in the hall again. She undoubtedly has
another UTI. She had one last year and after two different antibiotics it
was cleared up and has been using the box ever since .... until last Sunday.
Someone peed on the bathroom floor. I thought it was Isabelle but didn't see
her doing it so wasn't positive. It wasn't her usual spot and I thought one
of them could be leaving me a message of disapproval as I recently removed a
litter box from in there. With one fewer cat I thought it would be nice to
have some space to move in the too small bathroom and removed the box that
was in there. This morning she peed in the hall and announced herself by
scratching at the closed door she pees by. Think she's trying to tell me
something?

I have changed her diet over the last year and added wet food in the
evening. She's not on prescription diet as the vet said it would be useless
if she was eating any other  food to even bother putting her on it.  With
these three I have no idea how I'd keep her out of someone else's food. They
are all close enough in size now that the feeding in the box trick wouldn't
work. She seemed to be doing ok on SD regular in the morning and wet in the
evening until this week. The only thing that changed is that I had given he
some SD Hairball Lite because she was doing the hairball cough a lot. The
food worked. She hasn't coughed since I put her on it but now we're back to
peeing in the hall. She was on the hairball food last year when this started
(fall shed with a long-haired cat and all that) so I'm wondering if the food
is a factor in all this.

I'll have the vet on the phone as soon as they open to ask for a collection
kit to get her tested again and for now she's off the HB Lite. I mentioned
that food to the vet last year and he poo pooed the whole thing but there
have been other things he hasn't been very concerned with that has caused me
to question how thorough this vet is any more. He owns the practice
(multi-vet that just went VCA in the last few years) and I'm wondering if
maybe going VCA hasn't put some kind of pressure on him. I've used him for
years and never had cause to doubt his competence before. He was and still
is excellent at keeping you posted about a cat in his care. He always
personally calls even after something as routine as a neutering to tell you
the cat is fine and give you the post op instructions. When my Ralf was in
his care a few years ago, I had to have gotten 6 or so calls from him during
that day to keep me informed. I thought he did everything possible to try to
save Ralf. However, when I asked him recently about Isabelle's hair loss in
her hind quarters he blew it off. I had alarm bells going off when she
started losing the hair back there again - she did that last time she had a
UTI too.

At any rate does it make any sense that the hairball food could trigger a
urinary tract problem? If so what's left is hitting the trash in a hurry.

W