Instruct: Classify the given review into positive or negative sentiment.
Query: this stuff is great

I found it once at Kmart and have been hooked on it since. They stopped carrying it and have to buy it from Amazon now. But worth it! The label doesn't tell you, but apply and then wait at least 15 minutes before you drive your car. I've been putting it on the tires first then waxing my car, which takes like a hour - then it has time to set up and not spin off. I also put it on in the garage because if it gets on your driveway, it stains for a long time