The answer to 'how often for mosquito control' is that most experts recommend treating for mosquitoes every 3-4 weeks during the mosquito season in your area. This helps break the mosquito life cycle and keep populations under control.
Mosquitoes can breed rapidly, with a full life cycle from egg to adult in as little as 7-10 days. Treating on a 3-4 week schedule helps target the mosquitoes at different life stages and prevent them from reproducing. This is especially important during the peak mosquito months of late spring through early fall.