Product Highlights
- Kills lice, flies, keds, and mosquitoes
- Boosted with Permethrin & PBO combo
- Easy pour-on, spray, or back-rubber use
- Safe for dairy: no meat/milk withdrawal
- Use in barns, kennels & livestock areas
Durvet Synergized Permethrin 1% (1 Gallon) provides effective pest control for livestock and premises. As a cornerstone of Large animal supplies, Durvet Synergised Permethrin contains 1% permethrin and 1% piperonyl butoxide, targeting lice, horn flies, and face flies on dairy cattle, beef cattle, calves, and sheep. It also manages horse flies, stable flies, mosquitoes, and sheep keds. Suitable for barns, feedlots, and kennels, it reduces cockroaches, ants, and spiders. This non-aerosol, oil-based formula supports pour-on, spray-on, or back-rubber applications with no milk or meat withdrawal. It’s a vital tool for pest management, backed by Durvet.
Key Benefits
- Broad-spectrum control: Targets lice, horn flies, face flies, keds, mosquitoes, and more
- Synergized formula: Permethrin 1% + piperonyl butoxide for enhanced effectiveness
- Multi-application options: Pour-on, spray-on, or integrate with back-rubber systems
- Safe for dairy use: No withdrawal required for meat or milk
- Versatile premise treatment: Effective in animal housing, kennels, and feedlot environments
- Ready-to-use concentrate: No mixing needed unless using back-rubber
- Trusted Durvet quality: Essential in Large animal supplies for year-round insect control
- EPA-registered: Meets safety and efficacy standards for livestock pest products
INGREDIENTS ANALYSIS
INGREDIENTS ANALYSIS
- Permethrin……………………………………1.0%
- Piperonyl Butoxide, Technical…………1.0%
Attributes & Specifications
Attributes & Specifications
Durvet
Permethrin, Piperonyl Butoxide
Pour-on liquid insecticide concentrate
Controls lice, horn flies, face flies, and keds on cattle, calves, sheep, and lambs
safety & precautions
safety & precautions
- Durvet Synergized Permethrin is toxic to cats; do not use it on them.
- Avoid contact with eyes, skin, and inhalation of spray mist.
- Keep out of reach of children and unauthorized persons.
- Store in a cool, dry place away from heat or flames.
- Follow label directions carefully to prevent environmental contamination.
DIRECTIONS FOR USE
DIRECTIONS FOR USE
- For cattle and calves, apply 1/2 fl. oz. per 100 lbs body weight, pouring along the back and down the face, up to 5 fl. oz. max per animal.
- For sheep, pour 1/4 fl. oz. per 50 lbs body weight down the back, max 3 fl. oz. per animal; treat all animals post-shearing for best results.
- Use the ready-to-use spray undiluted on the neck, face, back, legs, and ears with a mist sprayer.
- For back rubbers, mix one pint per gallon of #2 diesel or mineral oil; ensure the device remains charged with daily use.
- For premise control, apply the undiluted spray to surfaces and insect hiding spots, treating approximately 7,300 sq. ft. per gallon.



















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