European wasps build large underground and wall nests across Melbourne. Here is how to spot a nest, what not to do yourself, and when to call for professional removal.
Why European Wasps Are a Growing Problem in Melbourne
European wasps (Vespula germanica) thrive in Melbourne's warm summers and mild autumns. Unlike honey bees, they become aggressive near food, soft drink cans, and meat BBQs — and a mature colony can hold thousands of wasps. Nests are often underground in lawns, in wall cavities, roof voids, or compost heaps, so many homeowners only discover them when wasps start streaming from a crack in the ground or eave.
How to Spot a European Wasp Nest
- Flight paths: wasps flying in a straight line to and from one point on a lawn, wall, or roof
- Papery grey nests: sometimes visible under eaves or in sheds (paper wasps make smaller open-comb nests)
- Sudden swarm near bins or outdoor dining: often means a nest is within 20–50 metres
- Ground holes: a steady stream of wasps entering a small hole in soil or garden beds
If you are unsure whether you have wasps or bees, do not spray. Bees are protected pollinators and need humane relocation. Wasps require different treatment — see our wasp removal service.
What Not to Do Yourself
Store-bought sprays rarely reach the queen in a large underground colony. Pouring petrol, flooding nests, or sealing the entrance can make wasps erupt aggressively and force them into wall voids. Night-time DIY with a torch is also risky — disturbed wasps will defend the nest. For any nest near doors, play areas, or under decking, professional treatment is the safer option.
How Professional European Wasp Nest Removal Works
Licensed technicians identify the nest entrance, apply a targeted dust or residual treatment that foraging wasps carry back to the colony, and monitor until activity stops. Most Melbourne nests are resolved in one visit, with a follow-up if the colony is deep in a cavity. We also advise on proofing so a new queen does not recolonise the same spot next season.
Prevention Tips for Melbourne Homes
- Keep outdoor food covered and empty soft-drink cans promptly
- Fit tight lids on bins and compost
- Seal gaps under eaves, weatherboards, and roof tiles before spring
- Check lawns and garden beds for wasp traffic in late spring and summer
Related reading: Wasp and Bee Removal in Melbourne and Wasp-Proofing Your Melbourne Backyard.
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