How to Tell If You Have an Active Wasp Nest on Your Letchworth Property
Underground nests are easy to miss and easy to disturb. Spotting the signs in a lawn, bank or border helps you keep clear and get proper help.
Nests you can step on
Not every wasp nest is attached to a building. Many are underground, often in an old burrow dug by another animal, a hollow under a shed base or a gap among tree roots. The first sign is usually a steady stream of wasps vanishing into the soil.
This is one of the more hazardous forms because people walk, mow and play on the ground without a thought. Vibration from a mower or from running feet can provoke an alarmed response, with many wasps rising together.
Knowing what to look for outdoors makes the difference between a safe garden and a painful accident.
Late summer is when many are found, as colonies are at their largest and the wasps are most visible. By then the nest below the surface may be about as large as a football or bigger, and spread out in a chamber under the lawn.
What an underground entrance looks like
An active entrance is a small hole, often about the width of a coin or a little bigger, with bare or crumbly soil around it. There may be a faint track worn into the ground leading to the hole. Wasps land at the edge, crawl in and, minutes later, others emerge.
- A single hole that gains steady traffic through the day
- A small mound of fine earth near the edge
- Wasps hovering low above the same patch of ground
- Grass thinning or yellowing around the hole
- Bare soil in a bank, border or the base of a hedge
The entrance can be partly hidden by grass, so look for movement rather than for the hole itself.
A single wasp circling the hole and darting away is not necessarily a nest. Watch for several minutes to see whether insects arrive with purpose and go straight in.
How to watch from a safe place
Stand well back, at least several metres away, and look across the lawn at ground level. Crouching is not needed. Keep everyone still and quiet. If you see wasps flying low over the same spot and dropping out of sight, that is your answer.
Do the watch at a warm hour. Early morning in cool weather may show very little. Compare two different times of the day if possible.
Never put a hand, a stick or a hose near the hole to test it. The nest below can be larger than the entrance suggests, and the colony defends it fiercely.
A discreet marker, such as a brick placed some distance away, helps you remember where the entrance is without going near it. That is especially useful if the grass is long and the hole is hard to see.
Mistaking other creatures for wasps
Some solitary bees and wasps dig holes in lawns in spring, often in small groups, with a little pile of soil beside each. These are usually quiet and have only one insect per hole. They do not produce the busy, constant traffic of a colony.
If you think you have honeybees or bumblebees rather than wasps, contact a local beekeeper or the relevant bee organisation instead of us, since we treat wasps only. A steady procession in one place, with a mix of arrivals and departures, is the pattern that points to a wasp colony.
Hornets and some other insects can also use ground cavities, which is a reason to describe what you saw carefully when you ring. If you are unsure what the insects are, say so; a photograph from a distance can help us understand the situation.
Give the entrance a wide berth in any case. The activity you see at the surface is only part of the story, and the chamber underneath can extend further than you would expect.
Making the garden safe in the meantime
Mark the area visibly from a distance, perhaps with a garden chair or a cone, without going near the hole. Stop mowing the spot, and keep children, pets and visitors away. If the nest is close to a path you use daily, consider using another route until the treatment is done.
If someone is stung, wash the area with soap and water, take out the sting if you can see it and use a cold pack. A rapid swelling of the face, lips or throat, wheezing, trouble breathing, dizziness or a widespread rash means ringing 999.
Pets are at particular risk with ground nests because dogs love to sniff and dig. Keep dogs on a lead in the garden and on any nearby path until the nest has been treated, and remember that a stung dog may need a vet.
If the entrance sits close to a path, a gate or a play area, it is worth putting a temporary barrier at a respectful distance. A line of garden canes with a bright ribbon, set well back from the hole, is easy for visitors to notice.
Booking in Letchworth
We treat a wasp nest for £70 (fixed), and an extra nest at the same property for £30 – there is no call-out charge, and we confirm the price on the phone before a technician attends. If the position means special access equipment is needed, the price may be higher, and we would tell you in advance. Nothing is done without your agreement.
Ring 07852 111 437, or complete the online booking form. The Letchworth technician is alerted by text and email, every day of the week. Same-day, evening and weekend visits are available, and the service covers homes, farms, allotments and commercial sites. Mention any allergy at the time of booking.
Describe the position of the hole relative to something fixed, such as a fence post or the corner of a shed. That helps the technician find it quickly on arrival.
Wasps on your property in Letchworth?
Fixed price £70 per nest, no call-out charge, same-day service available.