Before busy outdoor trading, map entrances, tables, bins, recycling, drink stations and repeated flight paths. Improve housekeeping and staff reporting first; a wasp visiting food does not prove a nest on the premises, and a suspected nest should not be blocked or disturbed.
Reduce predictable attractions
Keep bin lids close-fitting, clear sugary spills promptly and rinse or contain drink waste under the site's hygiene procedure. Move waste routes away from customer queues where practicable. Check awnings, shutters and accessible façade gaps from ground level without climbing.
Record time, weather, precise location and direction of repeated flight. One insect at a table is different from a steady route into a wall void. Train staff to report the route privately and keep customers away rather than swatting insects or spraying a general product.
Plan the response around people
Identify high-use doors, children's areas and the site's emergency arrangements, without storing unnecessary medical detail in the pest log. If someone develops the severe-reaction signs listed by the NHS after a sting, call 999; a pest-company call is not emergency medical help.
If a suspected nest is near a door, establish an alternative route and safe cordon where possible. Do not stand in the flight path, use a ladder for photographs or plug the opening. BPCA says not every wasp nest requires treatment; the decision depends on public-health risk and location.
Confirm business arrangements
Nominate who can authorise a survey, how out-of-hours access works and what areas a contractor may enter. Ask whether the visit covers identification, nest location and treatment, and what happens if the nest is inaccessible or the insects are bees or another lookalike.
Call 0203 393 2338, or read the commercial pest-control page.
Frequently asked questions
Should every wasp nest be treated?
No. Assess the species, location and risk; some nests can be left alone.
Can staff block the entrance hole?
No. That may redirect activity and put staff in the flight path.
What belongs in a useful report?
Exact location, repeated route, time, public access and a safe ground-level photograph if available.
Sources and further reading
External references may contain pest or skin photographs.
