Now there are litterally thousands of these on the market. I've tried about 15 or so different ones and this one is not bad. I live in the desert so bugs are bigger and badder. You seriously need these everywhere.This particular set i plugged in at the office. So far it is getting the job done enough for me to leave them and not switch them out.Yeah i've have better ones but not $15 dollars though. Usually twice as much. The low price point makes these a great buy.