Spring Pest Prevention Checklist for Essex County Homeowners

April is the single most important month for pest prevention in New Jersey. As temperatures climb above 50 degrees, a cascade of pest activity begins — termite swarmers emerge, ant colonies start foraging aggressively, carpenter ants wake up, and mosquito larvae begin developing in standing water. Taking action now, before infestations establish, is dramatically more effective and less expensive than reactive treatment in July.

This checklist is built for Essex County homeowners.

Exterior Inspection Checklist

• Foundation and Entry Points Walk your foundation and look for any gaps larger than 1/4 inch. Mice can squeeze through a gap the size of a dime. Rats can enter through any opening the size of a quarter. Pay particular attention to:
• Gaps where pipes enter the foundation
• Cracks in concrete or mortar
• Where the siding meets the foundation
• Gaps around conduit, cable lines, and other penetrations

Seal any gaps you find with a combination of steel wool and exterior caulk.

• Drainage and Moisture Walk your property after a rain. Standing water that remains 24 hours after rainfall is a mosquito breeding site. Address:
• Low spots in the lawn that collect water
• Gutters that overflow (clean them now if not done since fall)
• Downspouts that discharge against the foundation
• Basement window wells that collect water

• Wood-to-Soil Contact Any place where wood touches soil is a potential termite entry point. Look for:
• Deck posts sitting on soil rather than metal post bases
• Mulch piled against siding or the foundation (keep mulch 6 or more inches away)
• Firewood stored on the ground against the house

Check for Termite Signs Spring is termite swarmer season in NJ. Examine your foundation walls for mud tubes. Check exposed wood in crawl spaces for a honeycomb pattern inside the wood, which indicates termite damage.

Interior Inspection Checklist

• Kitchen and Plumbing Cockroaches and ants are attracted to moisture as much as food. Check:
• Under the kitchen sink for any slow leaks or moisture
• Around the dishwasher base
• Under the refrigerator
• Behind and under the stove

• Attic and Crawl Space Spring is when wildlife look for denning sites. Inspect:
• Attic vents — are screens intact?
• Soffit and fascia — any gaps or damage from winter?
• Any signs of squirrel or rodent activity: droppings, gnaw marks, nesting material

Spring Pest Calendar for Essex County

March to April: termite swarmers emerge, carpenter ants become active indoors, ant colonies begin foraging, and wildlife seek denning sites.

May: mosquito season begins, tick nymph season starts, and wasp nests begin forming — treat them early while small.

June through July: peak mosquito and tick activity, yellow jackets at maximum colony size, and bed bug season peaks through summer travel.

Priority Actions for Essex County Homeowners

1. Schedule a termite inspection now if you have not had one in the past 12 months 2. Begin mosquito service in May — starting early controls populations before they peak 3. Do a perimeter ant treatment — prevents foraging trails from establishing inside 4. Seal foundation gaps before rodent pressure increases in fall 5. Treat for ticks — especially if you have wooded lot edges or deer pressure

Essex County Pest Control provides spring inspection and treatment services throughout all 22 municipalities. [Contact us](/contact) to schedule a spring inspection.