I think the cat and rabbit understand its use better than the dog does!!! But the pooch is learning how to use it and all is well!!! Thanks for the treats!!! The Woof and Meow Shoppe would like to provide you with the best-priced, quality cat and dog animal lover gifts, as well as fun, yet functional pet supplies. If you have any questions or concerns, please contact us at: E-mail: help@woofandmeowshoppe.com Toll-Free: (800) 815-8092 Phone: (925) 648-4092 Fax: (925) 648-4093 WoofAndMeowShoppe.com