We have experienced the worst flea season this year that I can recall in my 83 years. We have about overcome them by using multiple treatments. These flea traps are unlikely to free your home of a bad infestation as we have had. However, they do kill many fleas and in addition to that, they are a perfect gauge to let you know how much progress you are making. If you have a bad infestation you will see dozens of fleas trapped on the sticky surface. If you only find one or two every few days, you know you are making progress. Beside this, they make an excellent night lite.