How to Tell If You Have an Active Wasp Nest on Your Ashen Property

Every pipe, cable and vent that passes through an outside wall leaves a small gap, and these service entry points are among the most frequently used wasp doorways.

Holes made by the building itself

A house or workplace is pierced by dozens of small openings: the waste pipe from the sink, the boiler flue, the extractor fan outlet, the gas and electric supply, the telephone and broadband cables, the outside tap, the tumble dryer vent. Each of these passes through the wall, and each is usually sealed with a collar, mastic or foam that gradually perishes.

Behind those small gaps there is often a cavity, a void under the floor or a space behind the plasterboard. For a wasp this is a ready-made way into a sheltered, warm space.

Where to look

Walk around the outside of the building and note every pipe or cable that comes through the wall. Look at each from a few paces. Pay particular attention to those on the sunny sides, low down or tucked behind downpipes, where a gap is easily overlooked.

• Wasps landing at a pipe collar and walking in.
• Flaking or crumbled sealant around a pipe.
• Grey fibres or flakes below the opening.
• A hum from the wall near the pipe.

Compare each opening. A pipe with no activity is fine. One with a regular two-way flow is the entrance to a nest.

High and low points both count. Gaps around the first-floor service pipes at the back of the house are as likely to be used as those at ground level, and they are harder to see. Binoculars help here. Walk around the building once in the early afternoon and again in the late afternoon to catch the pattern in the light, noting which side of the building has the most traffic.

Extractor fans and cooker hoods vent through the wall with a plastic cowl or louvred flap. A flap that does not close tightly can allow wasps in, and a flap that opens when the fan runs will let them out into the room.

Inside, behind and under

If the wasps are using a service gap, the nest may be inside the wall cavity, beneath a kitchen unit or in a void behind the bath panel. Inside the house, you may notice wasps in the kitchen near the sink pipes, or in the bathroom, or hear a hum from a cupboard under the sink or by the boiler.

Do not open cupboards or remove panels to look. A nest right behind a thin panel can be very close to your face when you open it. Keep the door closed, and leave things as they are.

Telephone and broadband cables, satellite cables and security camera wiring are often run through small holes drilled in a window frame or wall. These holes are rarely sealed well. A neat bundle of wires going into the house through a gap is a favourite entrance for wasps, and the signs are subtle: just a trickle of insects along the cable.

If wasps appear indoors near a cable entry point, a socket or the back of a television, they may be coming through the cable duct from outside. Do not disturb the cables. Keep the area clear, and tell the technician exactly where the cable enters.

Why not to seal it yourself

A tube of sealant is tempting, but filling the gap while the nest is active can send wasps towards other openings. Because pipes pass through multiple layers, they may find their way out into the house, usually through a gap around the same pipe on the inside, or through a socket, switch or light fitting.

Do not use foam or poke any object into the gap, and never spray into it. Instead, keep clear of the area and leave it alone. After the nest has been treated, sealing the openings is a sensible repair, which a builder, plumber or competent DIYer can do.

A good time to repair the gaps is in the cooler months, once you are certain the nest is no longer in use. Use a sealant suited to the material, and ask the technician if they can point out the gaps they noticed on the day.

Practical safety while waiting

If the gap is near a door or window, use another entrance in the meantime. Keep windows closed in nearby rooms. Do not run taps or the boiler more than necessary if the activity is right at the pipes, since vibrations carry along them.

Appliances such as a tumble dryer or extractor fan sometimes vent through the same wall. A nest near an outlet can be disturbed by warm air and noise. If the vent is where the wasps go in, avoid using the appliance until the wasps have been dealt with, and do not block the vent.

Electrical safety is worth a thought. Wasps near sockets, switches, light fittings and consumer units are a nuisance, and you should not spray any liquid near electrical equipment. If wasps are emerging from a socket or switch, do not touch it. Close the door of the room, and arrange for the nest to be treated. If you suspect any damage to wiring, ask a qualified electrician to look at it afterwards.

Gas appliances and flues also need respect. Do not block a flue or vent in an attempt to keep wasps out, as that could be unsafe. Leave the flue as it is, and tell the technician where it is.

Booking

Wasp Nest Removal Essex treats nests for a fixed £90 only, and a further nest on the same property is £35 only. This visit is fully insured, and each booking has one visit guaranteed. Our technician covers Ashen and nearby villages, offering same-day service seven days a week for homes and businesses.

Ring 01245 327274 or request a visit through the contact page. Say which pipe or vent the wasps use and whether you can hear them inside.

Frequently asked questions

More wasp advice for Ashen