Wasp Nest in Gutter Downspout & Swan Neck

Why Downpipe Wasp Nests Cause Catastrophic Flooding

How an internal downpipe nest acts like a solid mechanical drainage plug.

Unlike a nest in an open tree, a downpipe nest is confined within a smooth plastic cylinder. Wasps anchor their combs securely to the pipe walls, creating a multi-tiered barrier that catches roof tile silt and leaves washed down from the gutter.

Attempting to poke the nest with a rod from below merely compacts the pulp into a denser plug and triggers an aggressive swarm attack down the pipe.

• ✓Completely obstructs the 68mm pipe bore, stopping all water flow to ground gullies
• ✓Traps silt and decomposing leaves behind the nest, generating intense foul odors
• ✓Forces storm water to back up and overflow into cavity walls and roofline timbers
• ✓Poses severe sting hazards to anyone near ground-level drain shoes

Our 4-Step Downpipe Extraction & Hydro-Flush Method

We use a combined top-down vacuum and bottom-up hydro-jetting method that extracts the entire nest without damaging the pipe or spreading debris across your property.

• ✓Targeted Knockdown: Introducing approved insecticidal dust directly into the top swan neck
• ✓Industrial Vacuum Extraction: Sucking out the top nest envelope and comb structures
• ✓Flexible Hydro-Snake Jetting: Propelling high-pressure water up the pipe to pulverize remaining pulp
• ✓Full Drain Inspection: Verifying unobstructed water flow into the underground storm gully