Currently our most popular size, the 1 oz bottle of Critter Oil® will cover all of the needs of most single pet households: shampoo, spray, carpet powder, mopping floors, and lawn and garden spray. Remember, the more different ways you use Critter Oil®, the better it will work for you and the more you will love it. Just follow the directions included in the packaging. We can't even tell you the thing that it is most known for, so try it or ask a friend who has used it.