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Cynoff EC is a liquid insecticide concentrate which features the fast-acting neurotoxin Cypermethrin. Preferred pest management professionals for immediate control of pests, Cynoff is swift in dealing with dozens of household bugs. The product also boasts long residual life, killing off insects for extended periods of time.

CYNOFF EC - 1 Quart

Cynoff EC uses a knock down method which last longer then organophosphates to control pest. Once the pest comes in contact with Cynoff EC, it is killed. Cynoff EC is an odorless insecticide concentrate and leaves no residue. Cynoff EC, along with Cynoff WP and Demon WP, belong in the synthetic pyrethroid family, carrying the same active ingredient as Cyper WP and Demon WP. You only need 1/2 to 1 ounce of Cynoff EC per gallon of water, one quart yielding 32-64 gallons.

Fortified by Cypermethrin, Cynoff EC Insecticide delivers quick and powerful cleanout control of cockroaches and other pests. Upon contact or ingestion, the active ingredient instantly paralyzes and kills insects. Commonly used for residual control or direct kill applications, Cynoff can also be used for barrier treatments with exceptional results.

Why Should You Use CYNOFF EC ?

Cynoff EC provides immediate solutions to several infestations. It is a fast-acting contact insecticide that is odorless and long lasting.

Target Pest(s): Ants, Bees, Biting Flies, Boxelder Bugs, Centipedes, Cockroaches, Crickets, Earwigs, Elm Leaf, Beetles, Bees, Spiders, Ticks, Wasps, Firebrats, Fleas, Flies, Millipedes, Mosquitoes, Pillbugs, Silverfish and Sowbugs.
Manufactured By: FMC
Active Ingredient: Cypermethrin - 24.8%
Size: 1 Quart
Yield/Application: 1 quart of CYNOFF yields 32 gallons of solution (0.1%)
Not For Sale To: NY, CT, VT, AK

Restricted use in CA

* Outdoor use only.

**Not for Indoor use in California

Directions for CYNOFF EC Use

Cynoff EC is a concentrate that must be diluted in water for spray or brushing applications. Fill sprayer tanks half-full before adding the concentrate. Add the remaining volume of water and agitate the tank to ensure a uniform mixture. Depending on the target pest/s, solutions must have 0.1% to 0.2% active ingredient content. This can be made by mixing 1/2 fl. oz. of Cynoff with 1 gallon of water to produce solutions with 0.1% A.I. concentration. Doubling the amount of the concentrate yields solutions with 0.2% A.I. content.

Apply the product as a coarse, low pressure spray to infested areas and potential insect-harboring sites such as basements, attics, behind and under appliances, storage areas, cabinets, shelves, baseboards, under sinks and along plumbing. Pay particular attention to cracks, crevices and voids.

Using hand or power sprayers, apply the product by brush or residual spray to building surfaces, porches, window screens, patios, lawns and other grass areas to control outdoor insects.

For barrier treatments, create a band measuring 6 to 10 feet around structures to protect them from infestations. Apply the product as a coarse spray, at the rate of 1 gallon per 400 square feet. Also treat building foundations and other potential entry points to a height of 3 to 5 feet.

To control cluster flies, mix 1 fluid ounce of Cynoff to 10 fluid ounces of mineral oil. Apply to 1,000 square feet of wall area using fogging equipment.

Where to Apply CYNOFF EC

Cynoff EC is for residual pest control in and on buildings and structures including: industrial buildings, houses, apartment buildings, laboratories, buses, greenhouses, and the nonfood/feed areas of stores, warehouses, vessels, railcars, trucks, trailers, aircraft (Do not use in aircraft cabins), schools, nursing homes, hospitals, restaurants, hotels, and food manufacturing, processing, and servicing establishments.

Please refer to and follow the instructions on the product label.

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Do You Have a Question about this Product? Ask Our Experts!

Q. Cynoff EC to kill wasp??
A.  Cynoff EC does not have an instant knockdown kill. Usually, concentrate insecticides have a fairly delayed kill effect. If you are looking to contact kill a wasp, we recommend PT Wasp Freeze or Stingray Wasp Freeze. Both are pressurized jet sprays that have an instant knockdown effect.
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Q. I've used Cynoff WP for years with great results. What do suggest we switch to now that we have hardwood floors? The white residue is my problem. Thanks?
A.  I am not sure what product you used that is making you cough, but if you are looking for a cyfluthrin insecticide that is not a wet-able powder, we recommend Cy-Kick insecticide. Indoors, it is only labeled for baseboards, behind and under furniture, window frames, and door frames. We only carry one product that is labeled for indoor broadcast application and that product is Zenprox, however, it does not made of a cyfluthrin active ingredient. If you have any further questions or comments, please feel free to contact us again.
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Q. Can the product cynoff EC cause a dog to cough and act like they have a cold. I thought the product was odorless, when it was sprayed in our home this time it had a strong odor that burned your eyes and the smell lasted.?
A.  Different reactions may occur, but if your dog appears to be sick, it would be best to contact your local vet for a check up.
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