A wasp nest in a domestic property is one of those situations where the temptation to save money and handle it personally is strongest, and where the reasons not to are also strongest. Wasps in defensive mode of an established nest can deliver hundreds of stings in a very short time, and every year in the UK there are hospitalisations from allergic reactions and from stings received during botched nest removal attempts. This is a job for professionals, and the cost is modest compared to the alternative.
Wasps build nests in specific types of location – loft spaces, wall cavities, garden sheds, under eaves, in air bricks, in hollow trees, in disused rodent burrows. Nests are almost always started in spring by a single overwintering queen, and they grow through the summer as workers hatch and expand the nest. A small nest in June may be the size of a golf ball; the same nest in August can be the size of a football and contain thousands of wasps. The best time to have a nest removed is early in the season when it is small; but even a small nest deserves professional handling.
How wasps behave around a nest depends on the time of year and the condition of the nest. In early summer the wasps are focused on nest expansion and are less aggressive; late in the summer, particularly in August and early September, the workers become aggressive and unpredictable as the colony reaches its peak and food sources start to fail. A late-summer nest is more dangerous to approach than an early one, and this is when most stinging incidents happen.
The DIY approach – a can of wasp killer sprayed at the nest, or a plastic bag pulled over it after dark – is a bad idea for several reasons. Wasp killer sprays work at close range but require sustained application, and the wasps come out to attack the source of the disturbance almost immediately. A householder standing on a stepladder near an active nest, spraying with a can of insecticide, is highly exposed to counter-attack. The bagging method assumes wasps are docile at night, which they are only for as long as they are not disturbed – as soon as the nest is jostled they emerge in numbers. Neither approach is safe, and both frequently result in stings.
A pest control professional approaches nest removal completely differently. They wear a proper bee suit that covers the entire body, they use a professional-grade insecticide applied with the correct equipment for the location, and they know how to approach a nest without triggering a defensive response until the moment of treatment. A professional treatment typically takes ten to twenty minutes at the property and results in the elimination of the nest within twenty-four to forty-eight hours as the workers return with the applied insecticide.
The specific method depends on where the nest is. A nest in a loft is treated with a dust or spray insecticide applied at the nest opening from outside the immediate cluster. A nest in a wall cavity is treated by locating the entry point that the wasps are using and applying insecticide at that entry, so returning workers carry the material back into the nest. A nest hanging under an eave or in a shed can often be treated directly. In every case, the exact method is a professional decision that considers the wasp species, the accessibility of the nest, and the safety of the surroundings.
Wasps versus bees affects the treatment decision significantly. Honeybees are protected under UK law and their colonies should not be destroyed except in very specific circumstances. If a colony of what appears to be bees is discovered – typically in a chimney, a wall cavity or a hollow tree – a local beekeeper should be contacted before any pest controller. Beekeepers will often collect a swarm at no cost. A professional pest controller will identify whether the insects are wasps or bees before proceeding and will refer to a beekeeper if appropriate.
Post-treatment, the nest itself does not need to be removed in most cases. Once the colony is dead, the nest is inert and other wasps will not re-colonise it – they always build new nests rather than reusing old ones. A nest in a loft or wall cavity can be left in place safely. Nests in visible locations, or where there is a particular reason for removal, can be extracted after treatment but it is not necessary.
Cost for a professional wasp nest removal in Bournemouth is typically modest – a fraction of the cost of an emergency callout, and vastly less than the cost of medical treatment for multiple stings. Any Bournemouth pest control service will quote clearly and often provide same-day service in summer months. Waiting weeks after finding a nest, hoping it will go away, is the opposite of the sensible approach because the nest gets larger and the wasps more aggressive as the season progresses.