Permectrin CDS Pour-On Insecticide
For beef and dairy cattle, sheep, lambs, horses, and foals.
Product Description
Permectrin CDS is a synergized, concentrated pour-on insecticide combining permethrin 7.4% with piperonyl butoxide 7.4%. The piperonyl butoxide is a synergist, meaning it blocks the enzymes insects use to break down permethrin, so the active works harder and lasts longer than permethrin alone would.
It controls horn flies, face flies, lice, ticks, and other listed pests across a wide species range, including lactating dairy cattle, which is unusual and genuinely useful since many parasiticides are off limits in milking animals.
The format is flexible. Use it as a pour-on, dilute it for back rubber and oiler applications on cattle, or apply it as a premise spray. For a producer running cattle and horses on the same place, that means one concentrated product covering several jobs instead of three separate ones.
Active Ingredients
Permethrin 7.4%
Piperonyl butoxide 7.4%
Coverage
Horn flies
Face flies
Lice
Ticks
Other listed pests
How to Use
Read the label before use and follow it for species, dose, dilution, and application method, since rates differ between cattle, sheep, and horses, and between pour-on, back rubber, and premise use.
For pour-on application, apply along the backline as directed. For back rubbers and oilers, dilute at the labeled rate and keep the device charged, since a dry back rubber does nothing.
Timing matters with horn flies. Treating early in the season and keeping pressure on through it works far better than reacting once numbers are high.
Wear the protective equipment listed on the label and wash hands after handling.
Important Safety Information
Permethrin is a pyrethroid and is highly toxic to cats. Do not use on cats, do not let cats contact treated animals until dry, and keep cats away from treated surfaces and equipment. Barn cats are the realistic risk here, and permethrin toxicity in a cat causes tremors and seizures and is an emergency.
Permethrin is also highly toxic to fish and aquatic invertebrates and to bees. Do not apply directly to water, and do not contaminate water bodies, troughs, or runoff when cleaning equipment. Follow label guidance on application near water and around flowering plants where bees are active.
Observe all withdrawal and milk discard requirements stated on the label. Check these for each species before use.
Keep out of reach of children. Store as directed and away from heat and open flame.
Talk to your veterinarian or extension specialist
Horn fly resistance to pyrethroids is widespread and well documented, and rotating classes between seasons rather than using the same chemistry year after year is how producers preserve effectiveness. If a product that used to work is no longer holding flies down, that is usually resistance rather than a bad batch, and it is worth a conversation about rotation strategy.
