I really didn't think this was going to work. I needed something that would kill Flys. So i thought i would try this because if it didn't work i could send it back. But now i am glad i took the chance and ordered the Flowtron Insect killer. I wish i  would of a long time ago. In my patio for some reason i have always had flys in front of the door. I have scrubbed everything and cant find a reason for them to stay. I even bleached everything and the dang things would not go away. I did not want the long thing with dead bodys all over it in my patio. So Flowtron was the last thing i could think of trying. Wow it got rid of the flys knock on wood lol I love it and will never be with out one. I did put some fruit in the bottom of the Flowtron to help get the flys to the Flowtron. I will buy again