We own five dogs that stay in the house. You know how messy so many dogs can get. We have to have mats and old news papers for their urine. The stench can be bad at times. To control this, we regularly have to have dog urine odor removal done. It keeps our house smelling free. It's embarrassing to guests who regularly drop by. Our dogs are small and I don't want them roaming outside where they could catch fleas or get dirty.