
Strange Noises Inside the Walls
Wasps make different types of noises, and the sounds of a nest construction may alert you to their presence. As the nest grows, unseen, you may hear strange crackling noises, like paper rustling. Many species of wasps in Canada make their homes from paper pulp, which consists of chewed wood and the wasps' saliva. These noises may increase as the nest grows.Wasp Activity Near a Hole or Crevice
Wasps may find their way into your attic or heating and cooling vents. This allows them to build a nest out of the summer heat, but they must still carry nesting material into the space they choose. You may see wasp activity near these openings, including:- One or more wasps around the edges of an opening
- Wasps flying in and out of the hole
- Increased aggressive wasp activity when you approach the opening