Parasitoids

The most efficient pest killers in nature are wasps you'll never feel — parasitoids that turn a pest into a nursery for the next generation of beneficials. Buy the species matched to your pest and let them multiply.

Parasitic wasps for pest control are harmless-to-humans parasitoids that lay eggs in or on a pest, killing it and building self-sustaining control. When you buy parasitoids, you target aphids, whitefly, caterpillar eggs, and leafminers with precision and no residue.

Why choose parasitic wasps

Parasitoids are highly host-specific, seeking out their target even at low densities. They leave no residue, avoid resistance, are safe for people and pollinators, and grow stronger as each generation produces more wasps.

How to use them

Match the wasp to the pest, release early and preventatively, hang cards in shade on lower leaves, and avoid pesticide residues that harm them. Watch for parasitized “mummies” or blackened scales as proof of establishment.

What's in this collection

• APHIDIUSforce (Aphidius spp.) — aphid parasitoids.
• ENCARSIAforce & ERETforce (Encarsia, Eretmocerus) — whitefly parasitoids.
• TRICHOforce (Trichogramma) for caterpillar eggs; Diglyphus isaea for leafminers.

Frequently asked questions

What is a parasitoid?

A beneficial insect — usually a tiny wasp — that develops in or on a host pest, killing it; one parasitoid uses one host to reproduce.

Do parasitic wasps sting people?

No — these wasps are minute, harmless to humans and pets, and interested only in their pest hosts.

How do parasitic wasps control pests?

They lay eggs in pests like aphids, whitefly nymphs, or caterpillar eggs; the developing wasp kills the host and emerges to parasitize more.

How soon will I see results?

Look for mummies or blackened scales within one to two weeks; control builds as each wasp generation multiplies.