"In areas where your dog has urinated try to keep him from it or take away the attraction," Dogtime suggests. "For example, if he has urine-marked a house plant, move the plant to another spot he can't get to."
If your cat refuses to use his litter box, the problem could be the litter box. According to Pet Place, a cat might avoid her litter box because of her natural desire for cleanliness.
"If you think the box smells bad, just imagine how it smells to your cat, since she has 200 million odor-sensitive cells in her nose compared to your 5 million," Pet Place says.
In that case, scoop out the box at least once or twice a day. Change the litter often, and scrub the box with warm, soapy water every week.
And if your pet still pees in the house after you've cleaned every pee spot over and over again, you may want to just, you know, move.