Galendromus occidentalis is a primary biological control agent of pest mites and is used to control mites outdoors for crops, orchards, vineyards, nurseries, and indoors for greenhouses, growing rooms, hydroponics, aquaponics, interiorscapes, and container plants. Adults are white, but once they start feeding they take on the coloration of their prey, usually red or brown. If possible, G. occidentalis should be used before pest mite webbing occurs. Once pest mites are established, a much greater amount of G. occidentalis is required to be effective.
They are packaged on corn grits or vermiculite.