You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

The rope is made of rubber, and after about 30 minutes my little 20 lb. terrier had chewed up the rope, thereby eliminating the "tug" part of the toy. I wouldn't be surprised if she ingested some of it. For $10, this toy needs a more durable rope.
Negative

I have older mats that have a ribbed surface and work great. These have small stiff points and actually hurt to lean on or kneel on. I can imagine that they hurt my cats paws ad that is why they tend to jump over them when exiting the littler box.
Negative

the product was simply not recognized by my windows 7 home premium computer. very disappointed, considering on the Blue website it says that it is. I gave this the extra star because im sure its a great product, but the lack of communication of the compatibly was very disappointing. Most likely wont be buying anything else from Blue

Negative