Can Wasps Build Nests in Walls?
Investigate the core facts Can Wasps Build Nests in Walls supported by expert analysis.
We recommend using a wasp killing powder such as Ficam D and applying this through holes in the air brick from a distance using an applicator such as the Polminor Insect Powder Duster. Applying a wasp powder directly onto the nest will deliver much more successful results than trying to spray from a distance.