I adopted the sweetest stray cat a few months ago (Maine Coon cat) and he has been amazing since I got him -- no problems, and well house-trained. Well I've been busy lately with less time to play with him and pet him (he's an extremely people-oriented cat). He started peeing on the floor and I thought maybe the litter box need to be changed (I clean the poo out every day, but the pee had built up). So I bought a different kind of flushable litter. He used it 4 or 5 times and since then has stopped using it entirely. He just pees on the floor next to it and I think he's been peeing on the carpet cause it smells! Now I think he's pooping somewhere too cause it smells like it but I can't find it (yuck!) and I've looked everywhere. He's a total house cat who follows me from room to room and insists on getting attention. He's been waking me up at night with his jumping on the bed, so I've been locking him on the first floor and not letting him sleep in my room for a week or two. I had also put that flea killing gel between his shoulder blades a few days ago and he doesn't like it -- I don't know if that is related to the peeing. He has plenty of room in the house to run around and lots of windows he can sleep in and watch everything outside, but he never actually goes outside. (He's too long haired and he gets unmanageable burrs etc and he eats grass then throws up inside). I actually let him out this morning and this evening for a half hour to see if that would help his behavior, but he promptly came in and peed on the floor again. There are no other animals in the house except him. Can anyone tell me what's wrong and what to do about it? I don't want to have to give him away. Also, I wish I could get some flea killer that is organic and not so toxic for either him or me.