Lambda-cyhalothrin

What is it and how does it work?

Lambda-cyhalothrin is a nerve-acting pyrethroid. A microencapsulated formulation surrounds ingredient droplets with a coating; it is still a pesticide, not a harmless barrier. Syngenta: Demand CS product information and labels explains the underlying ingredient or an example product. An active ingredient is only one part of the finished formulation.

What forms and pests are covered?

Example product forms include liquid, spray, aerosol. Example target groups include ants, cockroaches, mosquitoes, fleas, ticks. These are drawn from different labels and references, not a claim that every product treats every listed pest. Check the label for the exact species, life stage and use site.

How is it used in pest management?

Demand CS is one labeled liquid-product example. Its manufacturer lists ants, cockroaches, mosquitoes and ticks, and specifies outdoor-only flea control for that product.

Identify the pest, correct food or moisture problems, close entry points where appropriate, and monitor the result. See our integrated pest management guide. A recurring infestation calls for reassessment, not an automatic stronger dose.

What cautions matter?

Read environmental hazard, protective-equipment and application restrictions on the exact label. Do not infer that a low-odor or encapsulated product eliminates exposure risks.

Prevent children and pets from contacting stored or applied products. Follow the exact label for protective equipment, ventilation, return intervals, storage and disposal. Do not transfer a pesticide into a drink or food container. Read the label safety guide before selecting a product.

What are its limits?

An outdoor flea use on one label does not authorize indoor carpet treatment. Residual claims for a brand cannot be generalized to every lambda-cyhalothrin formulation.

The same ingredient in a garden, structural, aquatic or pet product does not make those products interchangeable. This page does not verify current Texas registration, recommend a brand or provide dilution rates, placement quantities or a treatment prescription. Manufacturer sources describe example products, not every formulation.

Where should you check before using a product?

Use the label attached to the exact product you intend to use. Confirm its target pest, permitted site and application method. Check any professional-use restrictions and applicable Texas rules. NPIC explains how to read a pesticide label. Older fact sheets remain useful background, but the current product label takes priority.

For suspected human exposure, follow the label's first-aid instructions and contact Poison Control at 800-222-1222. Call 911 for severe symptoms. For suspected pet exposure, contact a veterinarian immediately.

This field guide is educational and does not offer treatment bookings.