Worm chickens every 3 to 6 months, or as needed based on fecal tests, to maintain their health and prevent parasitic infections.
Keeping your chickens healthy means staying on top of parasite control. Worm infestations can lead to poor egg production, weight loss, and even death if left untreated. This guide covers everything you need to know about when and how to worm your flock.
How Often Should You Worm Chickens?
The general recommendation is to worm chickens every 3-6 months. However, several factors influence this schedule:
- Free-range chickens need more frequent worming (every 3 months)
- Coop-confined chickens can go longer between treatments (4-6 months)
- High-risk seasons like warm, wet weather may require more frequent worming
Many chicken keepers follow a seasonal schedule, worming in spring and fall. This coincides with natural parasite life cycles and molting periods when chickens are more vulnerable.
Signs Your Chickens Need Worming
Watch for these symptoms that indicate worms:
| Symptom | Possible Worm Type |
|---|---|
| Pale comb/wattles | Roundworms, tapeworms |
| Weight loss despite eating | All internal parasites |
| Diarrhea | Roundworms, cecal worms |
| Gasping/”gaping” | Gapeworms |
Best Worming Methods for Chickens
There are several effective approaches to worming chickens:
Commercial Wormers
These pharmaceutical options are most effective:
- Fenbendazole (Safeguard) – treats roundworms, gapeworms, cecal worms
- Ivermectin – broad-spectrum treatment
- Levamisole – effective against most common chicken worms
Always follow dosage instructions carefully. Some products require precise measurements based on body weight.
Natural Worming Options
Many keepers prefer natural methods:
- Diatomaceous earth – food grade only, mixed in feed
- Garlic – added to water regularly
- Pumpkin seeds – contain cucurbitacin, a natural dewormer
While natural methods may help prevent worms, they’re less effective for treating active infestations according to The Happy Chicken Coop.
Preventing Worm Infestations
Good management reduces worm problems:
Pasture Rotation
Moving chickens to fresh ground breaks the parasite life cycle. This is especially important if you notice chickens digging holes where parasites can accumulate.
Clean Coop Practices
- Remove droppings daily
- Change bedding weekly
- Disinfect monthly
Quarantine New Birds
Isolate new chickens for 2-4 weeks and worm them before introducing to your flock.
Special Considerations
Egg Withdrawal Periods
Most commercial wormers require withholding eggs for 7-14 days after treatment. Check product labels carefully.
Molting Chickens
Chickens are more vulnerable during molt. Worm them before molt begins to support their immune systems.
Young Chicks
Wait until chicks are at least 6-8 weeks old before worming, unless severe infestation is suspected.
For more on chicken health, see our guide on identifying worms in chickens.