We have an old house with inadequate air circulation, and during the wet, warm fall started to notice mildew inside in most rooms. We bought this guy to help with the problem, and it has been great. We have to empty the bucket a couple times a day, but we knew that going in. And it has an auto shut off so we don’t have to worry about it being a problem if it fills while we’re gone. Adjustable noise levels are good too