He has started pooping and peeing in the basement concrete floor. It is humid today, and when I walked down to the basement the urine smell almost knocked me over. I don't want that. I know the area, and keep spraying with the hydrogen peroxide solution, I try to keep the door shut, but Pansy can get it open if I don't have it tight, and the basement is their stomping grounds, to keep the mice at bay. This is really Pi##ing me off , no pun intended. Any suggestions on getting rid of the smell, and stopping the behavior. the litter is clean.