Insecticide with living microorganisms to combat silverleaf whiteflies in greenhouse crops. The active substance contains natural and selected strains of Isaria fumosorosea var. Apopka strain 97, which acts against pathogenic insects with the following mechanisms: Enzyme production and Hyperparasitism: After application, the fungus penetrates the body of the insect where it grows, causing its death after 7-10 days. In high conditions of relative humidity, the fungus can grow outside the insect and produce new spores.