Fenbendazole 10 mL & 50 mL – Deworming Treatment for Backyard Chickens

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Product Overview

​Fenbendazole is a safe, effective dewormer for backyard chickens. Each 10 mL vial provides a 5-day treatment for up to 800 lbs of chickens, with a recommended follow-up treatment 7–10 days later to ensure complete worm control. For larger flocks, our 50 mL bottles offer convenient dosing for multiple chickens and full retreatment coverage.

• Safe for laying hens – no egg withdrawal

• Includes syringe for accurate dosing (1 mL for 10 mL vial, 3 mL for 50 mL bottle)

• Rotates with piperazine for effective worm resistance management

• Canadian shipping – no import/custom hassles

Pricing & Options

​ProductSizePrice (CAD)Notes

Fenbendazole10 mL vial$25Small flocks, covers 5-day treatment + retreatment

Fenbendazole50 mL bottle$89Medium to large flocks, full treatment coverage

For reference: small 3 mL US vials sell for ~$34.99 US (~$46 CAD) and only cover small flocks. Our larger vials provide better value per pound, Canadian availability, and included syringes.

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Dosing Instructions

​   *  5 consecutive days, then repeat 7–10 days later for complete worm control.

• Dose based on flock weight, not number of birds.

• Use the included syringe for accurate measurement:

  • 1 mL syringe for 10 mL vial

  • 3 mL syringe for 50 mL bottle

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Fenbendazole Dosing Chart

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Shelf Life & Storage

​Use within 6 months of opening the original 1 L bottle

• Store in a cool, dry place; avoid freezing.

• Pre-orders may be shipped as soon as safe shipping temperatures are reached.

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Pre-Order Notice

Due to shipping and temperature handling requirements, we are currently accepting pre-orders. Your vial or bottle will be shipped as soon as it is safe, ensuring full potency and effectiveness for your flock.

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Rotation Strategy

For best results and to prevent worm resistance:

• Rotate fenbendazole and piperazine periodically.

• Small flocks: use fenbendazole for full treatments and piperazine for routine maintenance.

• Large flocks: dosing and rotation can be customized based on fecal testing and environmental conditions (climate, rainy season, etc.).

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Why Choose Our Fenbendazole

• Larger vials for easier dosing and retreatment coverage

• Includes syringe for accurate administration

• Affordable, safe, and convenient for Canadian backyard flocks

• Provides clear, easy-to-follow dosing instructions and charts