Lately Brazilian scientists have had the best success in developing biological control agents of plant - eating mites. (sciencedaily.com)
They are limited to certain kinds of insects, and have been found to be effective biological control agents against several other kinds of insect pests that live in the soil. (articles.orlandosentinel.com)
This wasp has been used for biological control of the southern black widow in Hawaii and could become a significant limiting factor of the brown widow population in French Polynesia. (sciencedaily.com)