Treatments · Pyrethroids
Esfenvalerate
A synthetic pyrethroid discussed in wasp and yellowjacket control guidance.
Updated October 3, 2026 · Educational ingredient reference
Quick reference
- Chemical family: Pyrethroids.
- Example forms: Aerosol, Other label-specific formulations.
- Example target groups: Wasps, Yellowjackets.
- Use context: Use site and formulation vary by product.
- Targets and forms vary by product. The exact label governs permitted pests, sites and methods.
What is it?
Esfenvalerate is a synthetic pyrethroid insecticide. It acts on the insect nervous system.
Where does it fit?
Texas A&M wasp guidance discusses this ingredient in product examples. Formulations differ; a reference is not permission to spray a concealed nest or use any product indoors.
What cautions matter?
Sting risk, nest access and the complete product formulation affect treatment decisions. Avoid exposure, drift and water contamination, and protect pets and non-target insects as the label directs. Pyrethroid resistance can limit performance. Get qualified help for inaccessible or concealed nests.
What governs use?
The current product label controls permitted pests, sites, placement, protective equipment and restrictions. This is an educational ingredient reference, not a recipe, product endorsement or statement of Texas registration.