Liberty 50 Plus IGR Spot - On for Dogs

Liberty 50 Plus IGR Spot - On for Dogs

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Product Overview

Liberty 50 Plus IGR Spot - On for Dogs is an effective spot-on plus insect growth regulator that provides long-lasting tick and flea control on dogs. It contains Nylar that binds with the dog's hair and skin even when wet. Also contains Permethrin, that is stored in your pet's oil glands and is distributed evenly and continuously after application. This insect growth regulator is great to use on dogs to eliminate and prevent fleas and ticks re-infestation. Liberty 50 is also good to use for mites, lice and mosquitoes.

4 sizes available:

Puppy, miniature and toy dogs - use only on 12 weeks and older. 3 month supply.

Small dogs - under 33 lbs. 3 month supply.

Large dogs - 33 - 66 lbs. 3 month supply.

Extra Large dogs - over 66 lbs. 2 month supply.

Note: Do not use on cats.

Features and Specs

Active Ingredient permethrin - 50.00% pyriproxyfen - 1.20%
Target pests Fleas, Ticks, Lice, Mites and Mosquitoes
For use in Puppies and dogs over 12 weeks of age. Do not use on cats.
Application Applied directly to dogs skin. Package contains a three (3) month supply besides extra large dogs which contains two (2) month supply.
Pet safe Yes, if used as directed on label.
Shipping Weight 0.10 lbs
Manufacturer Star Horse Products NV, Inc. (Mfg. Number: BC698731)
UPC 818946005504


Liberty 50 Description:

  • Kills, repels and prevents re-infestatin of fleas for up to 5 weeks.
  • Kills flea eggs and flea larvae for up to 8 weeks.
  • Breaks the flea life cycle.
  • Kills, repels and prevents re-infestation of ticks for up to 6 weeks.
  • Kills or repels mosquitoes, lice and mites on dogs for up to 4 weeks.

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Questions & Answers

Have a question about this product?
Can it kill mites enbedded in the skin?

I got a mite infestation from cleaning my yard (rat mites, bird mites, and chiggers). I am buying Sterifab and Onslaught products to clear up my house, but the mites are also embedded in my skin (white or black specks) and I need to get rid of them, or they will re-contaminate my bed, chairs etc when they detach. My dermatologist did not know of any product. Can I use this one? Also, should I use a lice product, or this on e, to dislodge the mites from my hair? I have had this problem for 4 months. A professional exterminator sprayed my home and yard, but it did not have any effect. Thank you.


This product is not labeled for use on humans. We are unable to give advice on products for use on skin as we are not medical professionals. We apologize we could not be more helpful. 

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0 of 1 people found this answer helpful

How long does it take for fleas to start dying on my dog after applying Liberty 50 on my dog

Liberty 50 Plus IGR Spot - On for Dogs should start to kill fleas within a few hours.

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