If we can clearly see the entrance to the nest, we use it to inject a powder directly into the nest. If the entrance is not visible, we apply a residual spray to areas where wasps land before entering the nest. As far as wasp extermination goes, both methods are very effective at getting product into the nest to exterminate it.
Our focus is on your safety when exterminating the nest. We approach the nest in a way that minimizes disturbing it. This ensures the wasps become confused rather than aggressive and dangerous.
The nest is usually dead within a couple of hours.