Ordered and plugged in Riddex Pro over a year ago. If there are any results, I can not see them. Still need to fight roaches with sprays and foggers. Still need to remove the occasional spider web on the ceiling. Over the winter, I had some pesky rats that ate the poison I had to put out (luckily found the dead ones before they could start to smell too bad.
My summary is that this is an expensive Night Light!!!