At one point, I had five Mosquite Magnets running on my property, and they do "OK" when placed in a good location. Three of mine went completely inop, though, and dealer support was horrible. And, with the cost of propane these days, I found it just wasn't worth it. Spraying myself with DEET is a lot cheaper and more reliable.
What I have found works really well are the mosquito dunks that you can get at Home Depot or online. Just pop one in each small body of water, and the larvae die off in a few days. It's totally safe and sound -they have some kind of bacteria in them that is lethal for mosquito larvae but don't hurt anything else. Since using them, I've noticed a HUGE decrease in the mosquito population around here.
If you don't have bodies of water around where the mosquitos obviously breed, you can use five-gallon pails full of water set strategically around your house. The mosquitos will lay their eggs in them and the larvae will then die off. It really works.