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What is Bifenthrin Insecticide and How Does Bifenthrin Work?

A dead cockroach

Bifenthrin kills roaches and dozens of other pest insects.

Insecticides need a powerful active ingredient to combat resistant insects. Bifenthrin is one such chemical that works on a variety of insects and kills them quickly in the target area.


How Does Bifenthrin Work?

Bifenthrin is the active ingredient in many different brand name and generic pest control products. It's a synthetic pyrethroid and mimics the naturally produced pyrethrums that are found in chrysanthemums. It works on contact and by ingestion and paralyzes the insect, causing death within minutes or hours.

It provides residual activity, so it does not have to be sprayed directly on the insect for it to be effective. Insects that come into a sprayed area will become exposed to the chemical and die as a result.


Where Should You Use Bifenthrin?

Bifenthrin is labeled for use both indoors and outdoors. It can be sprayed in food-handling areas and spaces where pest insects hide and breed, such as inside crawlspaces and beneath appliances. Spray it on and around buildings, lawns, plants and shrubs to eliminate infestations. Because plants can't absorb bifenthrin, it's safe to use it on ornamentals and pristine turf. Some common areas for use include:

  • Homes
  • Apartments
  • Landscapes
  • Restaurants
  • Offices
  • Business complexes
  • Warehouses


What Does Bifenthrin Kill?

Bifenthrin products are effective at targeting and killing more than 75 different insect pests. This active ingredient provides total pest control when targeting roaches, earwigs, fleas and other common pests such as:

  • Spiders
  • Millipedes
  • Silverfish
  • Pillbugs
  • Ticks
  • Wasps
  • Mosquitoes


Is Bifenthrin Toxic?

Products containing bifenthrin are safe to use around people. It's also safe for pets when the ingredient has dried on the target surface. Though it's less toxic to people and other mammals, it's highly toxic to aquatic animals and semi-toxic to birds. It should never be sprayed directly on pets when treating fleas and ticks. It can be applied to pet bedding and other areas; however, let the product dry before allowing the pet to enter the treated space.

Total Pest Control With Bifenthrin Products

Insecticides with bifenthrin as the active ingredient kill and control pest infestations. They come in liquid and granular form to target pests in a variety of settings, such as residential indoor spaces and outdoor gardens. Bifenthrin Insecticide formulations are available from both Brand Name Manufacturers and Generic Manufactures. Some of the most popular ones are listed below.  Bifenthrin knocks out pests and keeps buildings and landscapes clear of infestations.

2 Responses

Richard a Lizzi

Richard a Lizzi

September 09, 2019

I have a mulch beds about 10’ X 25 that kind of surrounds a patio. It is without a doubt carpenter ants walking from the beds across the patio all day. I have about 3 inches of mulch down. Question: Will the Bilfen L/P granules kill these carpenters ants and what is the procedure. PS: They aren’t in the house. Thank you



September 09, 2019

I am a manager for a pest control company in Texas, upper management has said bifenthren is a repellent. All the research I have done, no where does it say it is a repellent. If it is, then how does it repel as it kills insects?
Thank you!

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