I can't believe they expect you to believe that these things can do a good job. I don't even know how good the company is who makes them and never heard of them before. They expect you to believe that they do a good job lol. There no way. I have been reading a lot of good reviews though but I don't believe them because there no way its worth it because of the noise alone. Its just not something that I think would work well or be worth it. To expensive to risk trying. I can't believe they actually sell something like this. What were these people thinking? lol