What is Flumethrin and how does it work?

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The prevention of tick infestation in pets is an important measure for the prevention of tick-borne diseases.
Spot-on products and pet collars that slowly release the active ingredient onto fur and skin are practical and quite effective. Flumethrin is an effective tick repellent that is used in pet collars.

What is Flumethrin and how does it work?

Flumethrin is a synthetic pyrethroid insecticide commonly used to protect livestock and domestic pets against ectoparasites such as ticks, fleas, flies, etc.

At a low concentration, it causes hyperactivity in insects and at high concentration paralysis and death of insects. It works by opening the sodium channels and disrupting the transmission of nervous impulses in insects causing a depolarization of membranes which leads to over-excitement and eventually death.

Does Flumethrin repel ticks?

Flumethrin has a significant repellent effect on certain ticks; however, this depends strongly on the animal, type of application of Flumethirn and the doses. Flumethrin not only repels ticks but also kills them. The active ingredient slowly spreads from the site of direct contact over the skin surface of the animal within a period of eight months.

Products with Flumethrin?

Flumethrin formulations come as a spray or dip and as a ready-to-use pour-on used mainly on livestock. It can also be used for domestic pets in products such as impregnated flea collars, spot-on, shampoos, soaps, and sprays.

Popular collars pets, such as Seresto use Flumethrin as one of the active ingredients, the other being imidacloprid. These collars have an immediate lethal effect on ticks and fleas and kill them within 12 hours of infestation.

Seresto Flea and Tick Collar for Cats, 8-month Flea and Tick Collar for Cats
  • Provides 8-months of continuous flea and tick prevention
  • Seresto flea and tick collar for cats works through contact, so fleas and ticks do not have to bite your cat to die
  • Vet-recommended flea and tick prevention for cats in a convenient, odorless non-greasy collar; No need for messy monthly treatments
  • Starts to repel and kill fleas within 24 hours of initial application

Last update on 2021-01-24 / Affiliate links / Images from Amazon Product Advertising API

Flumethrin in Pet Collars

Flumethrin in cat collars or dog collars effectively combats tick infestation and repels ticks. It works against larvae, nymphs, and adult ticks for 7 to 8 months. In addition to ticks, the active ingredient is also highly effective to prevent flea infestation.

Is Flumethrin safe?

  • Do not administer Flumethrin topically (spot-on, shampoos, soaps, sprays, etc.) in case of extended skin lesions: this can lead to excessive absorption through the damaged skin.
  • In small dogs paresthesia (skin sensation of tingling, tickling, prickling) can happen at the therapeutic dose, which usually disappears in 12 to 24 hours.
  • Toxic effects can be potentiated after simultaneous exposure to organophosphates or other synthetic pyrethroids.
  • Only use such products on cats that are specially approved for cats.
  • Never use spot-on for large dogs on small dogs. It happens that some users want to save money and buy large spot-on for treating smaller dogs twice or more times. The risk of overdosing is considerable, either due to erroneous calculations or through an unskilled application. Remaining products in opened spot-on vials can deteriorate.

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