For reference we live just north of Cedar Rapids, Iowa. Several other reviews good and bad make reference to their area and type of mosquito and how it effects how well the unit works. It has been raining for weeks here (which isn't usual) and the mosquitoes are just out of control (not usual also), swarm us like knats lately. Honestly I'm a big guy and the neighbors gotta think I'm re-enacting the bee scene from Tommy Boy every time I go in the backyard, even with deet and bug soother sprays both on.. Also we have a 20 month old girl who loves being outside and fights us and cries as we rush her inside the house from the car to keep her from being bitten up, it breaks our hearts, but what can we do? Even our Labrador is getting chewed up and the top of her head where the fur is short is bumpy with bites and this is an inside dog with a dog door. I researched and read every review on any product I thought would help, even a little. First I drained anything holding any sort of water from the rain. I then sprayed our shrubs, compost pile, lilacs and hostas with the most potent spray I could find and it knocked them down quite a bit.  I found this on Amazon and with 4+ stars on 3800+ reviews I felt it was probably worth a try. Firstly it shipped fast (Prime) and arrived in perfect condition. I temporarily mounted it hanging from our garage eve before dark and powered it up, few zaps here or there at first. As it started to get dark it was one or two zaps per second. I went inside and came back out after dark to check on it after our daughter was asleep and it was zapping constantly. I approached it and stood in amazed disgust as the wall of the garage was furry with mosquitoes next where the unit was hanging and I watched up close as dozens of mosquitoes flew in through the outside  plastic grid and to get zapped. I know it kills all kinds of flying bugs , but was pleased in our case that it was 20 to 1 Mosquitoes to other stuff while I watched. I'm aware that it takes several days to weeks to reduce the mosquito population in an area but with this and spraying problem areas I think our yard will be filled with toddler laughter again soon. I hope this helps you reclaim your yard as well. Thank you for reading