COUNTER 20G Lock'n Load

AMVAC · EPA Reg 5481-562 · Insecticide / Nematicide ✓ Last verified 2026-05-30

Key facts From the EPA

Registration, signal word, restricted-use status and approved use sites are sourced from the U.S. EPA pesticide registry. EPA Reg. No. 5481-562. View this product's label on the EPA ↗ (EPA copy accepted April 27, 2021)

Active ingredient Pending extraction

Manufacturer AMVAC

EPA registration 5481-562

Category Insecticide / Nematicide

Application method Systemic

Target pests Nematodes

Safety & handling DANGER

According to the label From the product label

These application details were read from this product's label by our system to help you in the field. The label is the law — always confirm rates, sites and restrictions against the actual product label before mixing or applying. View the full label →

COUNTER 20G SmartCartridge is a systemic insecticide and nematicide used at planting in field corn, corn grown for seed, popcorn, sweet corn, sugar beets, and grain sorghum. The active ingredient is Terbufos at 20.0% by weight. It is designed for use with a closed loading system to control a wide range of pests, including corn rootworms, wireworms, white grubs, corn flea beetles, maize billbugs, southern corn billbugs, thrips, symphylans, chinch bugs, nematodes, lesion lance, root knot, spiral stunt, stubby root, dagger cutworms, and lesser cornstalk borers. The product is highly toxic and is classified as a restricted pesticide due to acute oral, dermal, and inhalation toxicity, as well as risks to aquatic organisms and wildlife. It must be used by certified applicators. Handling requires specific personal protective equipment (PPE), including long-sleeved shirts, long pants, shoes plus socks, and protective eyewear. In some application scenarios, chemical-resistant gloves and respiratory protection (NIOSH-approved) may be required. Always follow specific engineering controls and safety rules to prevent exposure. The product is highly toxic to fish and wildlife; avoid application near water or in areas where runoff may occur.

Application rates & sites 1

Target pest	Indoor / Outdoor	Where on site	Rate	Dilution	Infestation level	Notes
Corn Rootworm larvae, Wireworms, White Grubs, Seedcorn Maggots, Seedcorn Beetles, Corn Flea Beetles, Maize Billbugs, Southern Corn Billbugs, Thrips, Symphylans, Chinchbugs, Nematodes, Lance, Lesion, Root Knot, Spiral, Stunt, Stubby root, Dagger Cutworms, Lesser Cornstalk Borers	Outdoor	Field Corn, Field Corn Grown for Seed, Popcorn, Sweet Corn, Sugar Beets, Grain Sorghum	4.5 to 6 oz. per 1,000 ft. of row			Banded or In-Furrow; place granules 4 to 5 inch-band over the presheeth and incorporate evenly into the top 1 inch of soil. DO NOT exceed 6.5 pounds of Counter 20G per acre.

Re-entry interval (REI) 48

PPE required Loaders, applicators and other handlers using engineering controls must wear: Long-sleeved shirt and long pants; Shoes plus socks; Protective eyewear. Depending on application, may require chemical-resistant gloves and NIOSH-approved respiratory protection.

Timing & weather

Do not apply in wet soil conditions that may prevent the equipment from covering pesticide granules.
Do not apply to flooded areas.

Use restrictions 12

DO NOT contaminate food or feed products.
DO NOT use or store in or around home.
Keep out of reach of Domestic Animals.
DO NOT apply directly to water or to areas where surface water is present or to intertidal areas below the mean high water mark.
DO NOT contaminate water when disposing of equipment wastewater or rinsate.
DO NOT apply in wet soil conditions that may prevent the equipment from covering granules.
DO NOT apply to flooded areas.
DO NOT harvest sweet corn within 60 days after application.
DO NOT graze or cut for forage within 30 days of application.
DO NOT harvest sugar beets or feed tops to livestock within 150 days of a knifed-in application.
DO NOT harvest grain sorghum forage or fodder within 100 days after treatment.
If applied to sorghum, do not use if ALS-inhibitor (HRAC group 2) herbicides were applied within 30 days unless specified by the herbicide label.

Documents

📄 Label 📋 SDS 📖 Guide 📢 Marketing

Additional documents (4)

📎 Other — Counter 20G Lockn Load 2ee rec en 📎 Other — Counter 20G Lockn Load 2ee rec en 📎 Other — SmartChoice 5G Lock n Load 2ee rec en 📎 Other — SmartChoice 5G Lock n Load 2ee rec en

Label SDS

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Label text

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Reference only. Always read and follow the most current EPA-approved label on the product container. State and local restrictions may apply that are not reflected in this digitised copy. Verify the EPA registration number and revision date before use.