I received the Flowtron BK-15D Electronic Insect Killer, 1/2 Acre Coverage. I am so happy I got this before Mother's Day because. Mosquitos and flies have been a pesky critters. I put it in my back yard. It really works fast zapping the Mosquitos, moths, and flies. I am  100% satisfied with this Zapper. I have gone to Lowes, Home Depot, Wal-Mart, and they were all out of this Insect Killer. I wished I would have ordered this first before going to all these locations and being dissappointed. Thanks a lot.