I thought hard about spending the extra money for this accessory but am very glad I did. It makes my life easier by a little bit and, by buying it at the same time, I saved time in having to order it separately and money in shipping it separately. Go for it! Very helpful!

Glad I bought the extra reservoir. I only have to fill it twice weekly for 1 cat.

Product is made of very durable plastic. The screw top lid stays on strongly and seems unlikely to break. The reservoir fits as intended on the back of the pet fountain. I got what I paid for, and am happily satisfied.

lasted all week, great product

I love the fact that this reserve water is actually replaceable, and it holds a weeks' worth of water so my cats always have water at hand.

It's simple, and does exactly what it is supposed to do.

Started to use reservoir the past 2 weeks and works fine.

This was a fantastic addition to our fountain. It was getting old having to refill it every day or so. With this reservoir, we can leave it alone for 4 or 5 days!

Works fine, would be nice if it would "integrate" with the base. It does attach so it won't separate on the ground, but if I pick it up (for example to clean it), the components separate.

Provides an excellent benefit for our three kitties while keeping plenty of water available without the need to refill the waterfall dispenser so frequently. Helps when you read the directions, too. I ruined my first reservoir by putting it in the dishwasher along with the plates and silverware. Can you spell "deformed"?