From the different designs of bug zappers on the market this one is by far the best. Firstly it's got 360 degrees of bug attracting light and access to the round zapping element. Secondly despite zapping thousands of bugs each nite, the element and surrounding cage stay totally clean. I have this 1.5 acre model and it's been employed 3 very busy nites of zapping and it's still clean. My other zapper is a flat rectangle standing flat Vex bug zapper. Every morning I have to clean off its completely clogged element and cage with compressed air. The Stinger you hear zapping away non stop busy, the Vex is just a quiet messy less busy contraption.  I will never buy any other zapper again other then the Stinger Bug Zapper.