Beneficial organisms can come from any of the microscopic groups of organisms ––bacteria, fungi, viruses, nematodes and protozoans. Many are vital to soil health whereas some are utilized for natural insect pest control. Discovery of the amazing functions of some of these microscopic warriors against common pests has led to the development of some of the products listed below. Investigations revealing how other microscopic fungi or bacteria actually benefit your soil and plants, breaking down organic matter to release nutrients for absorption and improving tilth (the "fluffiness" of the soil, so roots grow easily) have led to the development of the rest of the products.