we just moved into a house in january and the previous owners had at least one dog that use the boxwood bush right next to the back door as a potty. the entire bush smells like dog urine, is there a way to get rid of the smell cause the bush is a large healthy size and its one of the few planting in the yard. its right next to our patio and back door so the smell isnt going to be very welcome as the weather gets warmer.