I got a new balinese kitten about 3 weeks ago. He was 8 weeks old when we got him, and "litter trained". There are two floors, and a little box on each floor. He spends most of his time downstairs, and uses his litter box without fail each tim--never any accidents. However, when he sleeps in the bed upstairs, even though there is a litter box right next to the bed..he has been peeing on the bed. He has used the litter box upstairs, just not as much as the one downstairs since thats where we are most of the time. He has used the litter box upstairs properly. However, most of hte time he just jumps in it, plays in it like a sandbox, then jumps back out and proceeds to pee on the bed. I tried the whole puting him in a little room by himself with the litter box, food, and water already for the first week we had him..and when I noticed he peed on the bed a couple days in a row, I put him back down there for another week..When I let him back upstairs again at night, he didnt pee on the bed and used the litter box properly for a good 5..but this morning, he did it again! Any suggestions? He doesnt have accidents anywhere else in the house..i just dont get it. And yes I wash the blanket immediately after, and I dont think it's UTI related..help?