"I had purchased both the feeder and water reservoir. My Tabby-Coon mix is a snacker and doesn't overindulge her fickle appetite, so the unlimited feeder option works great. I leave it out with dry food so there's always something available in addition to her wet food meals. The water reservoir works fine, however it quickly accumulates hair and debris, and I've found the Petmate FreshFlow fountain to be much better as it filters out the hair and circulates the water. My kitkat loves it too and her water intake has skyrocketed. It doubles as entertainment since she loves dipping her paws in the fountain too :)"