The UTI was around 4 years ago - due to grocery store foods.
But i do watch him pee every so often to make sure therye still large, good stream pees.
They did seem to get more picky though, regarding the boxes if thats possible. not with the litter itself or the box itself, but with the amount of scooping. They used to be perfectly fine 2 cats with 1 box that got done twice a week. But now theyve decided thats not often enough - we learned that by him pooping outside the box (on that other rug - checked for any medical abnormalities and all was clear.) so have since gotten another box and clean them daily.
The most recent rug, though, i believe was a jealousy thing when my nieces were potty training and had accidents - on that rug. Their scent was on it and he wanted his scent on it. THen after it smelled like him it became a toilet (i think far before we realized). This rug is now gone though, just the hardwood floor. so that room no longer seems 'inviting'. Which is good.
I was also wondering, do cats have a problem with going in a clutterey room? We keep their boxes in the storage/computer room, but recently with home renovations that room has become quite cluttered with tools and groceries and things. Could this have any effect?
I did move one of the boxes into the hallway just today. Not a permanent solution, but in case they feel cluttered, its more in the open now (but not high traffic).
Will cats check other boxes if the one box isnt satisfactory? Or just figure therye all the same? We only have 2 cats but if having like 10 boxes made a difference somehow, id do it. we use clumping so its not much to scoop them (ok well maybe not actually 10 lol).
So, to sum up tho, UTI rug is gone, jealousy rug is gone - just this new rug, in a new area. with repellant on it as well.