It kills more moths than anything else.  I keep it on a surface so I can see everything that has been killed the previous night.  99% moths, maybe a mosquito here and there.  I am relegating it to front door duty to kill moths by the front door light and am upgrading to the Dynatrap for backyard duty for mass mosquito killing (hopefully).  If Dynatrap doesn't do the job, I may have to bite the bullet and but a Mosquito Magnet or SkeeterVac.