Methomyl Fly Bait

🏷️ Brand Names — Same Active Ingredient

⚠️ Don't buy duplicates. All products below contain methomyl (1%) + Z-9 tricosene attractant as the active ingredient. Buying two different brands is buying the same pesticide twice — they differ only in price, concentration, and formulation type.

Golden Malrin Fly Bait

Wellmark · Granular fly bait · 1% methomyl + Z-9 tricosene (fly pheromone)

Professional/Agriculture

Maxforce Fly Spot Bait

Envu · Scatter/spot bait · 10% imidacloprid (NOT methomyl)

Professional

Starbar Fly Bait SAME ACTIVE INGREDIENT

Elanco · Granular bait · 1% methomyl + Z-9 tricosene

Agriculture

🎯 Target Pests

✓House Fly✓Stable Fly✓False Stable Fly✓Other filth flies

🔬 How It Works

Methomyl fly baits work by combining two components: methomyl (a carbamate insecticide that disrupts acetylcholinesterase) and Z-9 tricosene (a sex pheromone that specifically attracts house flies). The pheromone lures flies to consume the bait; the methomyl kills them within minutes of ingestion.

This combination is extremely effective in high-fly-pressure environments like livestock facilities, restaurants with outdoor areas, and waste management sites.

⚗️ Mixing & Application Rates

Do not dilute. Apply in fly bait stations only — NEVER scatter bait on the ground.

Fly bait station (indoor/outdoor)

1–2 oz per station

Place in dedicated fly bait stations away from food prep areas, water sources, and areas accessible to children and pets. NEVER scatter on the ground — methomyl is highly toxic to birds, especially starlings, and is regulated for scatter use. Replace bait every 3–5 days or when wet.

Example

0.5 oz

per gallon

⚗️ Mixing Calculator

Enter your sprayer size and target rate — get the exact amount to pour. Backpack, hand sprayer, hose-end, or skid unit.

Open Calculator →

⚠️ Safety & Precautions

CRITICAL: Never scatter methomyl fly bait on the ground — it is acutely toxic to birds (especially starlings and other songbirds) and wildlife
Legal for use only in fly bait stations in most states — check your state regulations
Highly toxic to all insects, birds, and moderately toxic to mammals
Keep away from children and pets at all times
Professional license required in most states for agricultural/commercial use

📄 SDS / Label Resources

Golden Malrin SDS available from Wellmark International. Note that scatter use of methomyl fly bait is illegal in many jurisdictions — obtain current label and verify legal use sites before purchase.

📄 CDMS Label Database 🏛️ EPA Label Search

🐛 Pests This Treats — Learn More

Click any pest to view its full identification guide, biology, and treatment options.

🐛 Ants → 🐛 Flies → 🐛 Scales → 🐛 Stable Fly → 🐛 Ticks →

🌿 Environmental & Ecological Impact

🐝 Bees / PollinatorsVERY HIGH

🐟 Fish / Aquatic LifeHIGH

🐦 BirdsHIGH

🐕 Mammals / PetsHIGH

🦐 Aquatic InvertebratesHIGH

💡 Highly toxic carbamate. Restricted Use Pesticide. High risk to all non-target organisms. Professional use only.

❓ Frequently Asked Questions

Q: Is methomyl fly safe for pets?

Follow the product label. Keep pets out of treated areas until completely dried (2–4 hours for sprays). Once dry, treated surfaces pose minimal risk to dogs and cats.

Q: Can I use methomyl fly indoors?

Check the specific product label — formulations vary. Baits and dusts often have indoor labeling; concentrates and granulars are typically outdoor.

Q: How long does methomyl fly last after application?

Residual varies by formulation, surface type, weather, and UV exposure. Indoor applications last longer than outdoor. Check the product label for re-application intervals.

Q: What should I do if exposed?

Remove contaminated clothing, wash skin with soap and water. For eye contact, rinse 15–20 minutes. For ingestion or severe symptoms, call Poison Control (1-800-222-1222). Have the product label available.

📋 Safety Data Sheet (SDS)

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