I really have noticed any mosquitoes in the yard yet but yesterday I fired up the mosquito magnet. 24 hours later, there are already 2 mosquitoes in the trap. Now, the Mosquito Magnet is not a bug zapper. It’s goal is to attract the mosquitoes away from the parts of the yard the humans like but in the process it occasionally sucks up a critter or two into the trap and over time reduces the overall breeding population.