May in New Hampshire means longer evenings, first cookouts, and mosquitoes waking up along foundation beds before many families think to call. Waiting until July often means fighting established populations instead of getting ahead of them.
Mosquito Pros NH schedules perimeter barrier spray starting in late April and May across Rockingham, Hillsborough, Merrimack, Strafford, Belknap, Carroll, and Grafton counties. This article explains what May treatment covers and why timing matters.
What May perimeter treatment targets
Barrier spray focuses on shrubs, low vegetation, fence lines, and foundation plantings where adult mosquitoes rest during the day. Technicians treat the perimeter first, then apply product to decks, play areas, fire pits, and other zones where your family spends time.
The product bonds to foliage and provides residual protection between visits. An oil-based additive helps it hold on leaves through typical New Hampshire spring rain.
Why May beats waiting for the first bad night
Mosquito populations build through May and June as temperatures rise and standing water accumulates. Starting treatment early reduces the number of adults reaching your deck when school lets out and weekend guests arrive.
Families in Bedford, Manchester, Concord, and Seacoast towns who book in May often describe a calmer June than neighbors who wait for a crisis weekend.
What homeowners can do before the first visit
- Empty plant saucers, wheelbarrows, and tarp folds after rain
- Pull mulch back a few inches from siding
- Trim low branches that block access along fence lines
- Note where you sit outside and where kids play so technicians can prioritize those zones
- Confirm gate access and pet locations if you will not be home
You do not need to pre-spray or buy retail products. Simple water and access prep helps the first visit go smoothly.
Programs for the full season
Peak concentrates visits between Memorial Day and Labor Day for families who want focused summer coverage. Platinum, Gold, and Silver extend or adjust that rhythm for combined mosquito and tick needs.
Read mosquito control for full program descriptions. Add tick control when wood lines and pet paths are part of your May checklist.
Confirm your town and office
The Exeter office covers the Seacoast and lower Rockingham County. The Gilford office covers the Lakes Region and lower Carroll County. Check service areas for your town.
Use contact or call 603-778-1471 to schedule May perimeter treatment. Mention graduation and Memorial Day plans so we can align timing with your calendar.