Gary from Taunton, Ma writes,
When is the best time to spray the lawn to control ground wasps?
I have a large infestation of black ground wasps that take up 200 sq ft of lawn.
If you know where the nest is, we would recommend using Tempo Dust. We recommend using a hand duster and puff once or twice in the area where the nests are. It will typically wipe out a nuisance next within 24 hours. It is best to apply the dust in the late evening when they are not actively flying around anymore. Please let us know if you have any additional questions.
Answer last updated on: 07/30/2014