The answer to 'why is my wasp invasion' is that you likely have a wasp nest or hive near your home. Wasps are attracted to sources of food, water, and shelter, and may build nests in eaves, attics, trees, or other protected areas around your property. Common signs of a wasp invasion include seeing large numbers of wasps flying around, hearing buzzing noises, or spotting a nest or hive.
To solve a wasp problem, you'll first need to locate and identify the nest or hive. Wasps can be aggressive when their nest is threatened, so it's best to avoid directly disturbing the nest if possible. For small nests, you may be able to use a DIY wasp spray to eliminate the colony. However, for larger or hard-to-reach nests, it's best to call in a professional pest control technician who can safely and effectively remove the nest.