Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Pretty sure it doesn't work.

Tried using this for the past year and thought it worked until the last 3 weeks. We have a racer (I'm OK with it...my wife on the other hand...!) in our yard that I don't want to kill. I saw it in the yard and I walked out with the Snake-A-Way and tried to sprinkle it behind the snake trying to chase it out of the yard. I think I bothered it more than the crushed moth-balls! It finally curled up in a hole by a fence so I sprinkled the stuff around leaving a swath open where the snake could escape...I also put some DIRECTLY ON the snake, but it just sat there.One week later, snake was back sunning itself ON the area I'd sprinkled previous (supposed to last 3 months)! Had to chase it out again with a rake! Will have to start looking for some other repellent!