Some detergent will work, make sure it has no bleach in it. You need to get them house trained better. Also letting them out in the garden before bedtime will help them keep through the night.
By
01/03/2010
Your first line of defense is to ban the dog from the bathroom. Beyond that, you will need to first be certain that the floor is clean and the area "nuetralized". We swear by Nature's Miracle. ( be sure to follow directions) Strong cleaners with any type of ammonia will just reinforce the desire. Oxyclean does a great job. Once clean, you will need to limit your dog's ability to visit your bathroom. For him, it is like finding that favorite spot outside to pee. One more thing you can try is to put well-worn (smelly) t-shirts of your family's down on the spot. This will also help deter the desire to elminate there. Best wishes!