The concept is great..but the water gave my dogs Giardia and my vet made me promise to never take my dogs back because of the lack of cleanliness in the water...it is sad because it is a great idea for the dogs, just wish they could get the water clean. I'm not sure if Gilbert has a system in place for that, if not, that would definitely make a for a safer environment for the dogs. It took me two months to get the Giardia out of their systems...