I have a one year old female Bengal who pees on my laundry and in my dresser drawers if I leave them open. I was recently told that the wilder the breed of cat they more pee issues they have. At the time I got the Bengal there was another cat already in the house. She is gone now and the peeing seems to have subsided. I am not sure but I think it’s a territorial thing even if they are desexed. No advice but I feel your pain my friend.