Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It works. It really works!

OK. I bought this kind of on a desperate lark. Our bathroom sink was draining very slowly and drain cleaners were not helping. So, I was planning on taking the drain pipes and trap apart to solve the problem. Not necessarily a difficult task, but I wasn't looking forward to emptying out the vanity, the mess, etc. So, when I saw this for such a low price, I thought why not? And, here is what happened: I inserted it into the drain and pulled it back and out came a disgusting clump of black goo, hair, etc. I rinsed that off (swirling it in the toilet...don't tell my wife) then repeated this a few times until it came back clean. That sink now drains like it was brand new! The instructions say to throw away after use. But, being rather frugal, and not afraid of dealing with mucky goo, I cleaned it thoroughly in the toilet bowl, a quick final rinse with soapy water and it now waits for the next plugged drain!