As the days shorten and the first proper cold snaps arrive, a very specific kind of pest call-out picks up across the Rushcliffe side of Nottingham. It isn’t wasps or mice this time — it’s the sudden appearance of ladybirds, and often cluster flies alongside them, gathering in their hundreds on sunny south- and west-facing walls before slipping in through gaps around windows, soffits and loft vents to overwinter indoors.
Clifton and Ruddington, with Rushcliffe Country Park, the old RAF Ruddington airfield land and plenty of hedgerow and farmland on their doorstep, and Radcliffe on Trent, Cotgrave and Keyworth, all bordered by open Trent Valley farmland and, in Cotgrave’s case, the reclaimed colliery country park, are exactly the kind of semi-rural settings where this happens hardest. Ladybirds overwinter naturally in cracks in tree bark, dry stone walls and leaf litter out in the countryside — but the nearest large, dry, gap-riddled surface they can find is very often the gable end of a house on the edge of the village.
Why these particular areas see it worse
Harlequin ladybirds in particular (a larger, more aggressive non-native species that has spread across the UK over the past two decades) actively seek out buildings for winter shelter rather than natural sites, and they release an aggregation pheromone once a few have found a good spot — which is why sightings tend to go from a handful of insects to several hundred within a week or two. Homes closest to hedgerows, orchards, allotments or the tree lines around Rushcliffe Country Park and Cotgrave Country Park are the first to see it, but it isn’t limited to rural edges: older properties in the centre of Radcliffe on Trent and Keyworth with original timber soffits, loose pointing or Victorian-era loft vents are just as vulnerable once the insects start looking for gaps.
What actually happens once they’re in
Ladybirds themselves aren’t harmful — they don’t bite, breed indoors or damage structural timber — but a large cluster in a loft space or behind a chimney breast that dies off over winter creates a genuine secondary problem: the dead insects attract carpet beetles and their larvae (the same textile pest that’s been active locally in Beeston, Long Eaton and Sandiacre furniture over the past fortnight), and damp patches of dead insect bodies in loft insulation are unpleasant to clear out by hand, especially once disturbed. Cluster flies, which often arrive alongside ladybirds through the same gaps, are worse in one respect: they’re sluggish and slow-moving indoors through autumn and winter, then become active and noisy on the first warm days of late winter, bumping against windows in a way many residents mistake for a fresh infestation months after the insects actually got in.
What residents can do now
- Check loft vents, soffit gaps, air bricks and old pointing on south- and west-facing walls now, before the first cold snap sends insects looking for shelter — a five-minute check with a torch is often enough to spot where they’re already gathering.
- Do not vacuum or crush large clusters where avoidable; ladybirds release a strong-smelling yellow defensive fluid when disturbed that can stain paintwork and soft furnishings.
- Seal obvious entry points with silicone sealant or fine mesh rather than solid filler where ventilation still needs to happen, particularly around loft eaves.
- If a cluster has already established itself in a loft void, professional treatment and removal is far more effective — and far less unpleasant — than trying to clear it room by room as insects trickle through over winter.
NestBusters covers Clifton, Ruddington, Radcliffe on Trent, Cotgrave, Keyworth and the rest of Nottingham and Nottinghamshire, and this time of year our call-outs are a genuine mix of ladybird and cluster-fly clearance, proofing work on older village properties, and the usual autumn rodent and wasp nest jobs. If you’ve noticed insects gathering on an outside wall, or hear the tell-tale buzzing behind a chimney breast on the first mild day, it’s worth getting it looked at before the cluster grows any larger. Call NestBusters on 0742 984 9483 or visit nottinghampest.co.uk to book an inspection.
