Silencer

CaroVail · Lambda-Cyhalothrin · EPA Reg 66222-104 · Insecticide Document last checked 2026-05-30

About this product

Active ingredient Lambda-Cyhalothrin

Manufacturer CaroVail

Category Insecticide

Full details for Silencer

Source product label ↗ Open the catalog source label while the local copy is reviewed. Verify the product name, EPA registration number, and revision before use. Source safety data sheet ↗ Open the catalog source SDS while the local copy is reviewed. Verify the exact product and revision before relying on it. EPA registration data Reg. 66222-104 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 66222-104 →

Silencer is a restricted-use insecticide containing the active ingredient Lambda-cyhalothrin (12.7%). It is designed for professional pest control to manage various pests, including cutworms in agricultural settings. This product can be applied via ground applications (boom, airblast, or groundboom), aerial applications (ULV or non-ULV), and through sprinkler irrigation systems. When used for cutworm control in row crops, it is applied at a rate of 10 gallons of finished spray per acre. For orchard and vine crops, the rate is 50 gallons of finished spray per acre. Users must follow strict safety protocols, including wearing long-sleeved shirts, long pants, chemical-resistant gloves (barrier laminate or Viton), shoes plus socks, and protective eyewear. This product is highly toxic to fish and aquatic organisms; do not apply directly to water or areas where surface water is present. It is also highly toxic to bees; avoid application when bees are actively visiting the treated area. Always ensure proper buffer zones are maintained to prevent drift into aquatic habitats or non-target areas.

Pests covered (2)

cutwormsArmyworms, Caterpillars, Loopers

Areas treatable (2)

Row CropsOrchard and Vine Crops

How to treat each type of area 2

Row Crops

Target pest	Location	Rate	Unit	Label notes
cutworms	Outdoor	10	gallons of finished spray per acre	Apply by ground; for soil incorporated applications, use higher rates.

Orchard and Vine Crops

Target pest	Location	Rate	Unit	Label notes
cutworms	Outdoor	50	gallons of finished spray per acre	Apply by ground.

Mixing instructions 2

For pests	Location	Per	Finished strength	Label notes
cutworms	Row Crops	10 gallons finished spray	12.7% Lambda-cyhalothrin	Fill spray tank at least one-third full of clean water or diluent, add product, then add remaining water/diluent.
cutworms	Orchard and Vine Crops	50 gallons finished spray	12.7% Lambda-cyhalothrin	Fill spray tank at least one-third full of clean water or diluent, add product, then add remaining water/diluent.

Worker safety

Re-entry interval (REI) 24

PPE required Long-sleeved shirt and long pants; Chemical-resistant gloves (barrier laminate or Viton $\ge$ 14 mils); Shoes plus socks; Protective eyewear.

Timing & weather

Do not apply if wind velocity exceeds 15 mph.
Do not apply during temperature inversions.
Avoid application when wind direction favors non-target areas.

Use restrictions 5

Restricted Use Pesticide: To be used only by certified applicators or persons under their direct supervision.
Do not apply directly to water or areas where surface water is present.
Do not apply when weather conditions favor drift from treated areas.
Do not apply when bees are visiting the treated area.
Do not use non-emulsifiable oils as diluents.