Answer: Fungus gnats feed and breed in decaying organic debris. When your gardener turned over the soil and mowed the lawn, he made the gnats scurry to find new homes. Aside from removing all fallen leaves, garden debris and organic mulch materials from your yard, there's really no way of discouraging these pests. They will move on eventually so you'll just have to exercise a little patience. Wish I had a more speedy solution for you!
Q&A Library Searching Tips