I like these for water, so you dont have to refill bowls as often, but am not a big fan of using these for food, because it creates "grazing".

Pros: Holds a large amount

Cons: None

This is a great product. It allows the food to stay fresher and you don't need to fill it as often. Great product.

Pros: Only need to fill once a week

Cons: None

These are great feeders as long as your pet doesn't over eat. We have one feeder but 2 waterers. They are easy to clean and refill.

Pros: easy to clean

Cons: none

This is great, especially for water. It allows for your pet to have access to fresh food and water whenever they want it. The bottle is a bit difficult to clean, but with the right brush, it's not a huge deal.

Pros: difficult to tip, keeps food always available

Cons: non

You can put a lot of food down if you'll be out or have many animals. Wish they'd make 'em in stainless steel though

Pros: none

Cons: none