It is unfortunate that some people think all insects are harmful to the garden. Many are, but just as many are beneficial to the garden. They eat other harmful insects or their eggs and save the garden from being eaten alive.
It is important to know which insects you want to attract and keep in the garden and those that can do harm. Using beneficial insects to control problems in the garden is an organic method and it extends to the flower garden, vegetable garden, fruit trees and lawns.