I was pleasantly surprised by the build quality and how no assembly was required. Everything was simple from out of the box to plugging it into the electric socket. I was amazed at how effective this product eliminates flying insects. Almost immediately it went to work. To me, the satisfying sound of bugs being zapped was not overly loud or disturbing. The UV lights appears to be bright enough to instantly attract flying insects. I am very pleased with this purchase and would purchase again.