Dittos on the UTI thing - when Ritz had hers, it was the only time she ever attempted to pee somewhere other than her box....she felt like she had to pee all the time and jsut couldn't make it back to the box...get the checkup, and I would agree on one box per kittie.

I can always tell when Ritz wants the litter changed...she does this little tightrope walk around the edge of the litterbox and won't walk inside it ...we sift litter no less than every other day and completely replace clean litter at least every two weeks (sometimes more often, depends)-we are a one-cat household.