1. When carrying a pet dog out, especially in the car, but also can be used for pet cages, car or hotel room and so on.
2. Use at home, can save the trouble of handling pet excrement.
3. Help the pet dog learn to point to defecate. If you want to let the puppies learn to point to urine, you can put a pet diaper in the kennel, and then spray the stool on the pet diapers, which can help to adapt to the new environment.