Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: This product does not work

I purchased Pin-X & I've read the directions before I used it. After I used it..I waited 3 weeks & the i still find worms. I went #2 in the restroom the other night & I found 4 Pinworms. Okay, this medication does not work & this medication cost kinda a lot. I thought for this price I'd get something that works but no. I wouldn't recommend purchasing this product. I'm 23 year old male, I don't have any diseases & I rare get colds.