How to Keep Wasps from Building Nests on Your House

The most effective way to prevent a wasp infestation is to stop the queen from building her nest in the spring. Once the weather warms up in Suffolk County, fertilized queens emerge from hibernation to seek out sheltered, dry locations to lay their eggs. By sealing physical entry points, eliminating attractive food sources, and treating common nesting areas early, you can keep stinging insects away from your outdoor living spaces.

Common Wasp Species in the Hamptons

Before implementing prevention strategies, it is helpful to understand which insects are likely to target your property. The three most common offenders on the East End have very different nesting behaviors.

Paper Wasps: These insects build the classic umbrella-shaped open honeycomb nests. They prefer hanging them under roof eaves, behind window shutters, and inside outdoor light fixtures.

Yellow Jackets: Yellow jackets are aggressive scavengers that typically nest underground in abandoned rodent burrows. However, they will also exploit gaps in your siding to build massive hidden nests inside structural wall voids.

Bald-Faced Hornets: Technically a type of yellow jacket, these insects build large, enclosed, football-shaped paper nests high up in trees or attached directly to the side of a house.

Spring Prevention Strategies

Seal Structural Voids and Gaps

Queens actively search for protected cavities. Inspect the exterior of your home carefully in late March or early April. Use high-quality exterior silicone caulk to seal cracks around window frames, where siding meets the foundation, and where utility pipes enter the house. Ensure all attic and crawlspace vents have intact, tight-fitting mesh screens.

Manage Outdoor Scavenging Sources

Yellow jackets are highly attracted to protein and sugar. Managing these attractants is just as important as preventing other pests, similar to how removing standing water is critical for effective organic mosquito control.

• Ensure all outdoor garbage and recycling bins have tightly sealed lids.
• Clean your outdoor grill and grease traps thoroughly after every use.
• Do not leave pet food bowls outside on the patio or deck.
• Pick up fallen fruit from trees in your yard promptly.

Maintain Your Landscaping

Overgrown shrubs and low-hanging branches provide perfect shelter for stinging insects. Keep hedges trimmed back from the exterior walls of your home. If you have an abundance of flowering plants near your front door or patio, consider relocating them to the perimeter of your yard to draw pollinators away from high-traffic areas.

When to Leave Nests Alone

If you discover an active wasp or yellow jacket nest on your property during the summer months, do not attempt to seal the entrance hole. If you trap yellow jackets inside a wall void, they will often chew through the interior drywall and enter your living room or kitchen in large numbers.

Do not hit a nest with a broom or spray it with a garden hose. These insects will aggressively defend their colony, resulting in severe stings that can trigger allergic reactions.