Wasps and yellowjackets build through the summer in Worcester — paper nests under eaves, ground colonies in lawns, void nests behind siding — and turn defensive by late summer when colonies peak. A nest found in spring holds a queen and a handful of workers. The same nest in August holds hundreds, and it defends itself.
The rule for nests is simple: do not disturb one yourself. The visit treats the nest by the local professional, who identifies the species and the nest type first, because a ground colony and a void nest behind siding need different approaches. Flag any nest you spot in spring, when it is small — that is when it is easiest to deal with.
TL;DR
Problem: a wasp or yellowjacket nest on the property, growing through summer.
Solution: the local professional treats the nest — species and nest type identified first.
When to call: the moment you spot a nest, and in spring most of all.
Paper nests under eaves
Paper wasps build open-comb nests under eaves, porch ceilings and deck rails — the grey, umbrella-shaped nests most homeowners recognize. They are defensive near the nest but less aggressive away from it. The visit treats the nest directly, and the eave is checked for the next season's queens, which overwinter in sheltered spots and start new nests in spring.
Ground colonies in lawns
Yellowjackets nest in the ground — in old rodent burrows, in lawns, and under steps — and their nests are the ones mowing crews and meter readers find the hard way. A hole in the lawn with wasps coming and going all day is a ground colony, and it should not be stepped on, mowed over, or poked. The visit treats the colony at its entrance, and the ground is checked for a second entrance, because yellowjacket nests often have one.
Void nests behind siding
Wasps and yellowjackets also nest in wall voids behind siding, in soffits, and in the gaps where two roofs meet. The wasps enter through a small gap and build inside, and the nest is invisible from outside except for the traffic at the gap. The visit treats the void through the entry point and lists the gap for sealing, because a void nest left in place is rebuilt the next year by the next queen.
When nests peak
Colonies peak in late summer, when the nest holds the most workers and the wasps are most defensive. A nest that was easy to ignore in June is a problem in August. Flagging nests in spring, when they hold a queen and a handful of workers, is the season's recurring advice — and the visit in spring is a shorter job than the visit in August.
Steps
Spot the nest early
Look for nests under eaves, in the lawn, and behind siding in spring, when they are small.
Do not disturb it
Do not poke, spray, or mow over a nest. A disturbed colony defends itself, and a ground colony is found the hard way.
Describe it on the call
Describe the nest — where it is, how big, what the wasps look like — and when you first saw it.
Let the professional treat it
The visit identifies the species and the nest type, treats the nest, and lists the gap or the ground entrance for sealing.