Instruct: Classify the given review as either positive or negative.
Query: Excellent Product

We bought this in hopes of using it for our cat, to keep him from getting out of the dog door, due to the fact that he is de-clawed. I tried it out on myself before allowing it to be on our cat. It isn't painful, but does make you notice. He is now able to be upstairs and roaming the house. I would recommend it even for cats. It's great.