Permectrin II Insecticide

Item #14045

$9.99 to $23.99

Permectrin II Insecticide

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Permectrin II Insecticide contains 10% Permethrin. For use on horses, cattle, sheep, swine, poultry, dogs and their premises. Read More

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Permectrin II Insecticide

Contains 10% Permethrin. For use on horses, beef and dairy cattle, swine, sheep, poultry, dogs and their premises.

Permectrin II Insecticide is best for: 

  • horses
  • beef and dairy cattle
  • swine
  • sheep
  • poultry
  • dogs
  • premise

Permectrin II is used to aid in the control of:

  • lice, flies, ticks (including ticks that carry Lyme disease)
  • fleas
  • spiders
  • mosquitoes
  • cockroaches

Apply as a spray, dip or on a back-rubber. Offers a 30 day residual effect. Easily mixes with water or mineral oil. 5-day slaughter withdrawal for swine.

To use as a premise spray: 8 oz makes 6¼ gallons or 1 qt makes 25 gallons.

For use on animals: 8 oz makes 3 gallons; 2½ oz (5 tablespoons) in 1 gallon and 20 mL (4 teaspoons) in 1 qt. water.

Do not use on puppies under 3 months.

View manufacturer and/or label information

Any use of a product that is not clearly defined on the label directions should be done only under supervision of a qualified veterinary professional.


  • Brand: Bayer Animal Health
  • Type: Insect
  • Form: Spray, Backrubber, Dip
  • Ingredient: Permethrin
  • Size: 8 oz,Quart

Reviews (13)

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  1. 5.0 out of 5 stars

    "Go to Fly Spray"

    Been using this for years on my horses after spending much, much more on already formulated fly sprays and on even another name-brand concentrate. I have not used another spray that is any more effective and this product is a much better value! Now I buy only Permectrin, and make it up as needed.

  2. 5.0 out of 5 stars

    "Bugs gone"

    Great stuff- I mix this with a little repel (also from Jeffers) 1/3 cup mineral oil per gallon , all in a one gallon garden sprayer and spray my horses down every morning. It’s safe and does a great job.

  3. 5.0 out of 5 stars

    "Love it!"

    Love this stuff -- I use it on animals, vegetable plants, flowers & trees, and in the home to deter bugs. I use a pump garden sprayer -- works like a charm! I especially like that it kills ticks :)

  4. 5.0 out of 5 stars

    "Great results"

    I dilute this with water and spray on my horse that has allergies every spring and summer. This spray seems to work better than any other fly spray I've bought. And its cheap!

  5. 5.0 out of 5 stars

    "This stuff works!!!"

    I was so tired of throwing my money at other products and not getting lasting relief for my cows and horse. This product was a complete unexpected surprise! Not only does it work but it lasts!

  6. 5.0 out of 5 stars

    "permethrin II Insecticide for Animal"

    last year was the first time. loved it, just have to get right sprayer

  7. 5.0 out of 5 stars

    "not what i was expecting!"

    was looking for a different fly spray, was impressed by the reviews on this product. ordered it, made it up as per instructions for qt. spray and was so very disappointed! didn't do anything!, my horses had clusters of 12+ flies on their ankles and I sprayed and sprayed, they would fly around then come back. I basically soaked their legs and it didn't help. next day I added more of the product and it didn't do anything again. waste of money. will stick with repel-x from now on

  8. 5.0 out of 5 stars

    ""Go to" product "

    This is a good product for a lot of applications. Have used it for years. Keep it on hand at all times.

  9. 5.0 out of 5 stars



  10. 5.0 out of 5 stars

    "IT WORKS"

    I breed and raise foxhounds and also train them. If you could imagine a pack of hounds running through the woods for 4-8 hours at a time, you can imagine all the ticks that get on them. When I catch them I have a spray bottle with the permectrin mixed in it. As I load them up I spray them down and as a result I do not have any tick on my hounds or at my kennels. It works plain and simple.

  11. 5.0 out of 5 stars


    I raise dogs. I buy permectrin by the quart. It has replaced all other dog products including Frontline and Advantix and all the usual others. I put the liquid full strength into a 1/2 gallon hand pressurized pump sprayer and use coarsest thickest stream. I apply a 3 second spray (1 tbsp)from the top of the head to the base of the tail in medium dogs. Twice as much for big dogs. And one teaspoon (1 sec spray) for pups 8 weeks and above. Its oily and stays in place for about a week. It has an odor so you can tell if it is still in place or needs respray. It is effective against biting flies, ticks, fleas and mites. Useful adjunct for mange. I consider it to have a wide safety margin and in some cases I spray my hands rather than the puppy and then massage a light hand rub next to the skin if the pup is small.

  12. 5.0 out of 5 stars

    "BEST fly spray!"

    This is the best fly spray I've ever used! Last for days and ACTUALLY works! I will never buy anything else!

  13. 5.0 out of 5 stars

    "Fly Spray`"

    This is an awesome product have been using it for three years on my horse, if you mix it correctly it lasts up to 4 days!

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