The answer to 'how long does wasp treatment last' is that the effectiveness of wasp treatment can vary, but typically lasts 2-4 weeks on average. Wasp treatment involves applying insecticide spray or baits to nests and surrounding areas to eliminate the colony. The duration of the treatment depends on factors like the size of the nest, the type of insecticide used, and whether the entire colony was successfully destroyed.
In some cases, a second application may be needed a few weeks after the initial treatment to ensure all the wasps are eliminated. It's important to monitor the area and watch for any remaining wasp activity after the initial treatment. If you continue to see wasps, it's best to contact a professional pest control company to re-treat the area and ensure the nest is fully destroyed.