Well, that did the trick! Since I switched back to the cheap, store brand litter, there's been NO urinating outside the box. He just didn't like the new litter I was trying to get him to use. Yay!Well, I got our boy to the vet, and he was fine. Very healthy, actually, for a 17 year old cat! So I started looking at behavioral issues. Things I read here and on other sites suggested it might be the litter itself, and that cats, especially older ones, just don't like to change the type of litter they have! When we took in Travis, we also got a couple of boxes of the litter his former owner had been using, it was some kind of scented clay stuff. We use a wheat litter for our resident cats. To me, the scent of the clay stuff REEKED so I slowly changed him over to the litter our cats were using. But I guess Travis had other ideas about changing! So I switched his box back to a clay litter, unscented. For two days now, there's been no urinating outside the box!I hope that's the end of that problem, it was really getting bad! I don't like that it's not biodegradable, but it is half the cost of the wheat litter, I'm not cleaning up urine puddles every day AND our boy seems happy--and that's what counts, right?