Wasp Control
There are two ways of reducing a local wasp problem — either finding and destroying all nests in the area, or using poison bait. The advantage of poison bait is that foraging wasps carry the poison back to the nest. This means you don't have to find nests or approach those that are very large or hard to get at.
Both methods will only alleviate the problem for the current season and workers foraging for food will reinvade the area. The area will almost certainly be reinvaded next season by queen wasps, which can fly up to 30 kilometres in their search for suitable nesting sites.
Biological control has been used to try and achieve widespread control of wasps.