Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Does Not Work For Me

I have used this brush for a year now on my dog and cat, but am now fed up and looking for a different brush. My dog is a retriever/german shephard mix but she has very short, coarse hair and this brush seems to pull out some of the undercoat but then does not hold on "like a magnet" as promised. Most of the hair ends up on the floor or in clumps on her backside and tail. Also, I can brush her for a good half hour and 10 minutes later I will see more loose hair. The brush works sightly better on my cat as far as grabbing on to the hair (he has a lot of very thin hair even though he is a short hair). Still though, most of the hair that the brush removes has to be hand-picked from his body or the floor. I would not recommend this product.