I posted about this before, as have others, but can't find the threads.
Our cat consistently wees in the house. She has prefferred spots for this, and I clean it up without detergent (as suggested on the other thread), but she continues to do so. We have also tried shutting her out of the rooms where she wees, but she just finds another spot.
We also tried a litter tray, which did work, but we simply don't have enough space for a litter tray! I gradually moved the litter tray outside, but she then started weeing in the house again. She does poo outside though (in the litter tray). If it's a clue, she never has bothered to bury any of her doings - she just half-heartedly scrapes the earth (or now the floor) nearby.
I'm at my wit's end. We can't give her away - she is very affectionate and needs lots of lovin' (which she gets all evening, and we both work at home so she is not often alone) and since the Spanish are not great cat-lovers I suspect finding her a good home would be impossible. Dd could be part of the problem, but the cat has learned to avoid her as far as possible.
Anyway I read onthe other thread about these pheromone pluggy in things. Does anyone know much about them and where can I buy one online? (I asked at the vet's but he had never heard of them. I think he spends most of his time dealing with the funny toy dogs which are so popular here).