Wasps and hornets build paper nests that grow fastest in late summer, when the colony is largest. On Greater Toronto Area houses the usual spots are under eaves, behind soffits, in sheds and inside wall voids. A nest by a door or play area is a sting risk. A nest inside a wall can chew through drywall.
No. The colony dies in fall and the nest is abandoned. A new queen may start a nest nearby the following spring, often at the same gap in the soffit or siding.
Anywhere sheltered: under the eave, inside a soffit, under a deck, or in a wall void behind a crack in the siding. The entrance is often a small hole with steady traffic in and out.
