The Great Marsh and coastal wetlands produce some of the heaviest mosquito pressure in the state.
Dunes, trails and wooded lots around Cape Henlopen mean ticks on people and pets.
Historic wood-frame homes in town are prime termite territory.
What shapes pest pressure in Lewes
Lewes combines a historic waterfront town with a busy coastal setting, and pests follow both. The Lewes-Rehoboth Canal and the Delaware Bay shoreline, the Great Marsh and the dunes and woods of Cape Henlopen State Park all sit close to neighborhoods. Brackish water, wet ground and warm sea air create ideal conditions for mosquitoes, and shaded trails and tall grass make ticks easy to pick up.
In town, the historic district has old wood-frame houses with crawl spaces, porches and brick foundations that termites and ants exploit. Newer communities along Route 1 and the surrounding roads bring large lawns, ponds and landscaped lots that attract their own mix of insects. Many homes in Lewes are second homes or rentals that sit empty for part of the year, and vacant houses can develop pest problems that nobody notices until the owner returns. Guests arriving from out of state can also carry bed bugs in luggage.
Pest season in Lewes
Spring
Spring brings ticks out along trails and dunes, and termite swarmers appear around old wood-frame foundations.
Summer
Peak mosquito season arrives with marsh and canal breeding, and visitors and rentals add bed bug and ant concerns.
Fall
Fall sees mice move into second homes and garages, and spiders and stink bugs gather around porches and window frames.
Winter
Winter leaves seasonal homes empty, so check vacant properties for mice, moisture and signs of termite activity.
General pest, termites, rodents, bed bugs and wildlife for homes and businesses in all three counties. Need a WDI (termite) report for a home sale? They do those too.
Barrier treatments for mosquitoes and ticks, plus flies and spotted lanternfly. No mosquitoes, guaranteed — if they come back between visits, they re-treat free.
We own a second home in Lewes. What should we check when we return?
Look for droppings, chewed materials, mud tubes on foundation walls and signs of moisture. A pest inspection before the busy season can catch problems early, and Mosquito & Pest Authority handles in and around the house pests.
Why are mosquitoes so heavy near the Great Marsh and canal?
Coastal wetlands provide large areas of still, shallow water where mosquitoes breed. DNREC Mosquito Control treats marsh areas, and Mosquito & Pest Authority offers yard barrier treatments on a 21-day cycle.
Do I need to check for ticks after a walk at Cape Henlopen?
Yes. Dunes, trails and brushy edges are common places to pick up ticks, so check clothing, skin and pets afterward. Mosquito & Pest Authority can also treat your own yard for ticks.