Yeah, there was a small mold problem in my bathroom and I got one of these things just to try it out a month and a half or so ago. It cleared up after a spray of bleach and hasn't come back, and it's crazy how much water it collects! It also helps the mirror not to fog up as much when taking a shower. My bathroom is pretty small though, so that might be why it is so helpful. I think the main thing that helps keep the mold away is to kill it and then keep the humidity down as much as possible.