I use this in my backyard to keep the pests down especially flies.  Not a great mosquito killer unless you keep putting bait in it but that wasn't the purpose I bought this for.  This is my 2nd unit.  The first unit lasted about 5 years.  This one has been going strong and before purchasing researched to see if there was a better value out there.  I couldn't find one.  I am happy with this product.