I have the MosquitoVac from Sams Club, $348.00, bought in july of last year. I think they've come down in price this year. I liked the idea that it didn't need a extension cord. The thing does suck up mosquitos & black flies, quite a few, but I think you'd need 2 or more of them to make a real difference at our place. I went outside at 5:30 this morning & was not immediately set upon, so maybe starting earlier this year will work. I also bought some of those floating larvicide tablets at Agway & tossd them in the wet areas. I'm hoping the combination of the two brings relief.