Whitefly Parasites: Encarsia formosa, Pack of 500: NC

Parasites provide good control against greenhouse whiteflies. They come as eggs ready to hatch; use at least 1 for every square foot of greenhouse space, repeat 4 times at 2 week intervals for fastest results. For sweet potato whitefly or silverleaf whitefly, see also whitefly predators and green lacewings.