My cat continuously pees on the futon in our front room. She has recently been to the vet and given a clean bill of health. I figured she was doing it because I am a bad cat owner when it comes to cleaning the litter and only do it about every two days. I've been getting better and have been cleaning daily, but she continued to pee on the futon. I figured she could still smell the pee so I threw that futon out and replaced it with a brand new one. I put it together yesterday and this morning I noticed a wet spot that smelled faintly of cat pee. Does anyone have any tips on how to prevent her from urinating on our futon?