A breeze from an electric fan can help blow mosquitoes off course. Forget the bug zappers. Outdoor electronic bug zappers kill many insects, but very few pests and many beneficial insects. Mosquitoes are not attracted to light. Most of the insects that are attracted to the zappers never make it close enough to be zapped, so you may be actually attracting more insects to your yard with bug zappers.
Bats are actually much more helpful in controlling mosquitoes.
Mosquitoes come from larvae that live in standing water in ponds, pools and puddles or buckets, barrels and birdbaths. Make sure you are not compounding the mosquito problem in your landscape. Remove old tires, buckets and other water-holding containers. Change the water in the birdbaths and wading pools at least once a week and clean out or repair roof gutters so that water does not accumulate. Drain or fill puddles or ditches that hold water for long periods of time.