Protecting cattle from persistent horn, stable, house, and face flies is essential for health and productivity. This article reviews selective fly-control powders and larvicides designed for on-farm use, focusing on licensed feedthrough products and practical, ready-to-use treatments. Each option is evaluated by packaging, application, and fly-life-cycle impact to help producers choose effective, economical solutions.
| Product | Brand | Pack/Format | Key Benefit |
|---|---|---|---|
| JustiFLY Feedthrough Cattle Fly Control (Single) | JustiFLY | 360-gram add-pack | Non-toxic larvicide; treats one 50-lb bag of free-choice mineral |
| JustiFLY Feedthrough Cattle Fly Control (3 Pack) | JustiFLY | 3 Pack | Economical multi-pack; continues breaking life cycle across herds |
| JustiFLY Feedthrough Cattle Fly Control (6 Pack) | JustiFLY | 6 Pack | High-volume option for larger operations; sustained control |
| JustiFLY Feedthrough Cattle Fly Control (12 Pack) | JustiFLY | 12 Pack | Maximum on-farm coverage; scalable for bigger herds |
| Co-RAL 1% Livestock Dust | Elanco | 2 lb. shaker can | Multi-species insecticide dust; direct application on animals |
Below are five product sections highlighting each option with images, quick references to features, and practical usage notes to help you compare effectiveness and fit for your operation.
JustiFLY Feedthrough Cattle Fly Control
JustiFLY Feedthrough is packaged as a 360-gram add-pack designed for on-farm use. It is a non-toxic larvicide that targets multiple fly species affecting cattle, including horn, stable, house, and face flies. The approach treats a 50-lb bag of free-choice mineral, helping disrupt the flies’ life cycle with cost-efficient, per-head dosing. This option is suitable for farms seeking a straightforward, on-site larvicide that integrates with mineral feeding programs.
JustiFLY Feedthrough Cattle Fly Control (3 Pack)
This 3-pack provides additional on-farm deployment options for producers needing broader coverage. Like the single-pack variant, it targets all four primary cattle fly species through a feedthrough approach, promoting larval disruption and reduced larval populations over time. The triple-pack format supports mid-sized operations transitioning to more extensive fly-control programs while maintaining cost efficiency.
JustiFLY Feedthrough Cattle Fly Control (6 Pack)
The 6-pack option offers expanded on-farm use for larger herds or multiple pastures. It maintains the same non-toxic larvicide mechanism to intercept the life cycle of horn, stable, house, and face flies. This configuration supports ongoing fly management with less frequent reordering while sustaining consistent mineral-based dosing on the farm.
JustiFLY Feedthrough Cattle Fly Control (12 Pack)
The 12-pack provides maximum on-farm scalability, ideal for large operations or multiple animal groups. It retains the same essential features: non-toxic larvicide action, four-fly species coverage, and use within free-choice mineral programs. This option emphasizes long-term, centralized fly control across sizable cattle populations.
Co-RAL 1% Livestock Dust
Co-RAL 1% Livestock Dust offers a ready-to-use insecticide dust suitable for direct application on cattle. It provides multi-species fly and lice control and is approved for use on beef and dairy cattle, including lactating animals. The product’s dust formulation allows on-animal treatment without immediate withholding from milk or meat. This option complements larvicidal strategies by targeting existing pests on the animal’s surface itself.
Dry Fly Shake Floatant Twin Pack
Note: This product is included for comparison in this article due to its powder-based coating concept, though it is intended for fishing use rather than cattle fly control. It demonstrates the broader category of powder-based products, which may inform on powder formulation, application, and coating concepts that influence livestock applications and handling procedures.
Purina Fly Control Supplement for Cows
Purina’s fly control supplement for cows is a wind and rain mineral designed to provide essential minerals and vitamins while supporting consistent consumption. While not a direct larvicide, it contributes to overall herd health and resilience against fly pressure by promoting balanced nutrition that supports immune function and production. This option is best used as part of an integrated fly-management program that combines larvicidal feeds with nutritional strategies.
Buying Guide
Key considerations
- Target flies: Most JustiFLY products address horn, stable, house, and face flies. Co-RAL Dust targets multiple pests on cattle skin and hair. Choose based on the species you observe most often on your herd.
- On-farm workflow: Feedthrough products integrate with mineral feeding programs; ensure compatibility with your current supplementation protocol and mineral blends.
- Pack size and herd scale: Larger herds benefit from multi-pack options to reduce ordering frequency and ensure continuous control across pastures and facilities.
- Regulatory and safety: Non-toxic larvicides reduce risk to cattle and farm workers. Always follow label directions for application and withdrawal periods.
- Combination strategy: Consider pairing larvicide-based feedthrough products with direct-on-animal dust or spray options to address both larval development and adult flies.
Effectiveness and timing
Feedthrough products work by interrupting the fly life cycle with minimal daily dosing, making them compatible with routine farm routines. Dust formulations provide immediate surface control, while mineral-based programs support nutrition and health that can improve resilience to fly stress. Timing applications with peak fly activity and pasture rotation can maximize results.
Practical tips
- Rotate between products to mitigate any potential resistance development in fly populations.
- Keep comprehensive records of treatments, herd response, and milk or meat withdrawal guidelines where applicable.
- Assess local fly pressure by season and adjust pack sizes or product mix to maintain consistent control.