I got one of the Katchy's and have had it running non stop for the past ~48 hours. It has caught 100's of gnats, but the issue persists. I am hoping with a little more time it will improve. I am also trying out a bowl with apple cider vinegar, water, sugar, and dish soap. I don't know how effective it will be, but I will see if any have died in it tomorrow. I don't care if there are a few gnats, I just don't want them flying in my nose, mouth, and eyes all the time. I don't even want to know how many I have swallowed while I sleep (the cage is in my bedroom).