The information in this profile may be out-of-date. It was last revised in 1996. EXTOXNET no longer updates this information, but it may be useful as a reference or resource.

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Pesticide Information Profiles

A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program.

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TRADE OR OTHER NAMES: Cyfluthrin is the active ingredient in many insecticide products including Baythroid, Baythroid H, Attatox, Contur, Laser, Responsar, Solfac, Tempo and Tempo H. Combination products include Baythroid TM (+ methamidophos) and Aztec (+ tebupirimphos) (69).

REGULATORY STATUS: First registered by EPA in 1987, cyfluthrin is found in both restricted use (RUP) and general use insecticides (70). Cyfluthrin containing products may be classified by EPA as acute Toxicity Category II (bearing the signal word "Warning") or Toxicity Category I (bearing the signal word "Danger") based on its potential to cause eye damage (69). Currently, there are tolerances for residues of cyfluthrin in or on raw agricultural products ranging from 0.05 (hog meat) to 4.0 ppm (hops) (71). Note: These are subject to change. Check with specific state regulations for local restrictions which may apply.

INTRODUCTION: Cyfluthrin is a synthetic pyrethroid insecticide that has both contact and stomach poison action. It is a non-systemic chemical used to control cutworms, ants, silverfish, cockroaches, termites, grain beetles, weevils, mosquitoes, fleas, flies, corn earworms, tobacco budworm, codling moth, European corn borer, cabbageworm, loopers, armyworms, boll weevil, alfalfa weevil, Colorado potato beetle, and many others. Its primary agricultural uses have been for control of chewing and sucking insects on crops such as cotton, turf, ornamentals, hops, cereal, corn, deciduous fruit, peanuts, potatoes, and other vegetables. Cyfluthrin is also used in public health situations and for structural pest control (72).

FORMULATIONS: Cyfluthrin based insecticide formulations are available in the form of emulsifiable concentrates, wettable powder, aerosol, granules, liquid, oil-in-water emulsion and ULV oilspray (69). Typical application rates for agricultural use range from 0.0125 - 0.05 pounds/acre, substantially lower than many other commonly used insecticides. Pyrethrin and pyrethroid formulations typically contain piperonyl butoxide which acts as a chemical synergist. Typical carriers include organic solvents and water. It is incompatible with azocyclotin.





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Bayer Agricultural Products
PO Box 4913
Kansas City, MO 64120


References for the information in this PIP can be found in Reference List Number 2

DISCLAIMER: The information in this profile does not in any way replace or supersede the information on the pesticide product label/ing or other regulatory requirements. Please refer to the pesticide product label/ing.