Scanmask Spray
Kills the widest range of pests. Our pick for several pests at once or for preventing them.
From $37.99
Natural pest control that works underground
Beneficial nematodes hunt down grubs, fleas, fungus gnats, and dozens of other soil pests. Produced in Pennsylvania since 1985, with free shipping on every order.
We ship Monday through Wednesday, 2 PM Eastern cutoff.Free shipping.
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Ecomask Spray
Our recommended nematode for fleas, and a hardy choice for hot, dry climates.
From $37.99
Heteromask Spray
Our recommended nematode for white grubs, including Japanese beetle and European chafer grubs.
From $37.99
Scanmask Topdressing
The same Scanmask we've sold since 1985, mixed with peat moss or potting soil and spread by hand. Keeps up to a year in the fridge.
From $42.99
How it works
- Order
Pick your nematode by pest and area. We ship Monday through Wednesday in an insulated box with cold packs.
- Refrigerate when it arrives
Put the package in the refrigerator right away. Don't freeze it. It keeps until the date on the package.
- Mix, water, apply, and water in
Mix with cold water and let it sit 20 minutes. Water the area, apply in the evening with the Nema-Jet Sprayer, a pump sprayer, or a watering can, then water it in.
Fungus gnats in your houseplants?
Plants coming indoors for the winter often bring fungus gnats with them. Their larvae feed on roots in the top few inches of potting soil, and Scanmask treats them anytime.
Treat fungus gnatsWhy BioLogic
Producing nematodes since 1985We grow our own nematodes in Pennsylvania. Most sellers resell someone else's.
Safe for people, pets, and plantsNematodes occur naturally in soil and are exempt from EPA pesticide registration.
Honest application ratesOur rates come from our own research or research by reputable institutes. We don't exaggerate coverage.
Shipped to arrive aliveOur packaging is tested to keep nematodes alive for 92+ hours, even at 100°F. If your order is lost, damaged, or delayed more than 3 days, we'll replace it.