Your question reminded me that I wanted to search for foggers. I found
this one that is big enough for our 5 acres, but small enough to handle. A little pricey at ~$1600, but within my budget.
But, more intriguing was
this one, which is apparently completely automatic, dispenses mist in all directions and appears pretty effective. I could put 5 of these around the property for the cost of 2 mosquito magnets, and the maintenance costs appear to be quite a bit less. Anyone have any experience with them?
The reason these fairly expensive solutions are within my budget is because of a construction decision we're making. In Florida, most swimming pools are enclosed within an elaborate screen room to keep out the bugs. This one is probably typical, and a little smaller than what we would need for our new home.
They are very pricey; $10,000 is not at all unusual. However, they have disadvantages. They block out about 30% of the sun's energy, making it more difficult to heat the pool water without a pool heater. Plus, they're expensive to maintain -- I recently had my enclosure re-screened, and it was $2,000.
So, we've decided to forgo the pool enclosure on the new house and try to control the mosquitoes, instead. Spending $2000 or $3000 on equipment and several hundred dollars a year on supplies is still less expensive than the screen room. Plus, I get the benefit of using all of the property, rather than being held prisoner inside the screen room by the bugs. On the other hand, the screen room is passive and require no effort, while insect control will be an ongoing challenge.
If I get tired of the battle, I'll write off the mosquito control stuff as a failed attempt and build the screen room later.