I agree with Peaceandjoy. I've always had a dog and a cat. One dog and one cat were put down because they developed that habit as adults. Yes, it broke my heart but no way was I having my family living with that odor and bacteria. Animals have become substitute children - allowed to sleep with people, get on furniture and use the whole house to relieve themselves. Do you know that animal urine seeps it's way thru carpets into floorboards? It also penetrates drywall and tile grout. The only way to get rid of this is to remove those materials and replace them. Animals can smell the urine left years ago by others and go right to that spot.