I went through this for just shy of seventeen years with Ellie. We tried EVERYTHING!!! There was nothing medically wrong with him, he just had behavioral issues. When we first got him I lived with my Mom, she actually got him for me after a bad break-up. He RUINED her house! All the white carpet had to be replaced. It smelled awful! I took him with me when I got married. Same thing. My husband hated this behavior, but really liked El. When I got divorced I took El to my own place. He started this peeing thing again. I don't have a lot of money either, and sometimes I feel as if I don't have any money, so I came up with something else to try. I confined him to the kitchen with a baby gate. I gave him his food, water, green blanket, a few toys, and a litter box. This worked GREAT! Any time he would "relapse" he had to go back to the kitchen. He would go a good month out of confinement before he would pee in the floor. I don't know if you've tried this approach or not, but it may be worth a shot. I don't think your a bad person. Like you said, you are trying to find him a loving home here on PT. I personally feel like when I got Ellie I made a commitment to him for life. If Mom , or the Ex had had it their way, he would've been gone a long time ago! I hope you can come to a resolution without having to have him PTS. I know this is a VERY frustrating problem. I also know how offensive cat pee is, and it is embarrassing to have someone over. If you have not tried confinement, give it a try. It just might work for you and Sox. I know it sure made the last three years of Ellie's life better for the both of us. GOOD LUCK! And please don't let anyone make you feel bad. We all have to do what we have to do.