my old boy is 16/17 years neutered when he was 5 months old, but the little git has recently taken to spraying up everything in the house and i mean everything, doors, windows, wall, fireplace, sofa, toys, clothes, dare not leave a coat hanging off the back of a chair basically everything is wet and smelly he has been to the vets couple of weeks ago to rule out uti, we do have other cats all neutered too they dont spray at all, anyone have any ideas why he would suddenly start this, im beginning to dislike having him in the house at the moment as he just walks in and sprays 