Do not use bleach to clean urine off of the floor; the combination of the ammonia in the urine and the bleach will give off harmful fumes.
You can also opt for a store-bought carpet cleaning spray, but avoid products containing chlorine, ammonia and sodium lauryl sulfate, which can be harmful to pets.
Be sure to follow directions carefully when using a rented carpet cleaner.
If the urine smell is too strong for these quantities, add a full cup of vinegar to the final rinse cycle.
Avoid using dryer sheets, which may irritate your dog’s skin.