Guide · preserved from the original PestFactor
Mosquitoes and ticks in the valley
Summer in the Susquehanna Valley means mosquitoes — the river bottoms, floodplain standing water, and humid air create ideal breeding conditions. Add wooded edges and farmland for ticks, and outdoor living needs a real strategy, not just citronella candles.
Mosquitoes: source reduction first
Most biting mosquitoes breed within a few hundred feet of where they bite. Walk your property weekly in season: dump saucers, clear clogged gutters, refresh birdbaths, cover rain barrels with screening. No treatment outworks eliminating breeding sites — a good operator starts here, not with a sprayer.
Barrier treatments: what they do
Professional barrier sprays treat shaded vegetation where mosquitoes rest, knocking populations down for a few weeks per application. They're effective for events and peak season, but they're maintenance, not eradication — and they affect pollinators, so ask what products are used and whether flowering plants can be avoided.
Ticks: the serious one
Mosquitoes annoy; ticks transmit disease. Lyme and other tick-borne illnesses are established across central PA. Keep grass short at lawn/woodland edges, create wood-chip barriers between lawn and woods, check yourself and pets after outdoor time, and consider professional tick treatments for the property perimeter in spring.
Stink bugs and lanternflies
Brown marmorated stink bugs overwinter in homes across the region — seal windows and siding gaps in late summer. Spotted lanternflies are established in the valley; several local firms now advertise treatments. Neither is dangerous, but both are relentless.