How to Deworm Chickens?

By Chicken Pets on
How to Deworm Chickens?

Do you want to keep your backyard chickens healthy and happy? In this blog post, we’ll discuss the importance of deworming, the types of worms they can contract, and how to do it safely and effectively.

How to Deworm Chickens?

To deworm chickens, choose an appropriate dewormer, such as fenbendazole or ivermectin, and follow the recommended dosage based on your chickens’ weight. Administer the dewormer orally or through their feed, and repeat the treatment as needed, following the guidelines provided by the product.

The Importance of Deworming Your Chickens

Worms are a common issue for backyard chickens; they can negatively impact their health, egg production, and overall happiness. Deworming is an essential part of chicken care, ensuring that your flock stays healthy and thrives in their environment.

Worms that Affect Chickens

Chickens can contract several different types of worms. Understanding which worms are present in your flock is essential for choosing the right treatment. The most common types of worms that affect chickens are:

  • Roundworms
  • Hairworms
  • Gapeworms
  • Tapeworms
  • Cecal worms
  • Gizzard worms

Each worm poses different risks and symptoms, so identifying the specific worm(s) in your chickens is crucial for proper treatment.

Identifying Worm Infestations

Knowing the signs of a worm infestation is the first step in treating your chickens effectively. Common symptoms to look for include:

  • Loss of appetite or weight
  • Decreased egg production
  • Lethargy and weakness
  • Diarrhea or abnormal droppings
  • Breathing difficulties
  • Swollen or pale comb and wattles

If you suspect your chickens have a worm problem, it’s essential to consult with a veterinarian for further guidance and proper diagnosis.

Choosing the Right Dewormer

There are various products on the market for treating worms in chickens, with the most common being fenbendazole and ivermectin. Other options include albendazole, levamisole, and piperazine. Each dewormer may target specific worms, so it’s essential to select the right product for your flock.


Fenbendazole is highly effective against roundworms, cecal worms, and capillaria worms. It’s important to note that this product’s use in chickens is considered “off-label.” Although many chicken owners have safely used fenbendazole, there might be an “egg withdrawal” period, meaning you should not consume the eggs during and for a set time after treatment.


Ivermectin is another popular dewormer for chickens. It is effective against several types of worms, including roundworms, gapeworms, and hairworms. Just like fenbendazole, the use of ivermectin in chickens is “off-label,” and there might be an advised egg withdrawal period.

Deworming Methods

Once you’ve chosen the right dewormer for your chickens, the next step is to determine the best method of administration. There are several ways to provide the dewormer to your flock:

  • Orally: Some dewormers can be given directly by mouth. This method is ideal for ensuring each chicken receives the correct dose. Follow the product’s guidelines for the precise amount and administration method.
  • In their feed: Another way to deworm your chickens is by mixing the dewormer with their feed. Ensure the dewormer is evenly distributed and follow the product’s instructions for the appropriate amount of dewormer per pound of feed.
  • In their water: Some products can be mixed in your chickens’ water source. This method is convenient, but it’s important to monitor the chickens’ water consumption to ensure they are receiving the proper dosage. Follow the product’s guidelines for mixing ratios and water change frequency.

Preventing Worm Infestations

Keeping your chickens’ environment clean and well-maintained is crucial in preventing worm infestations. Here are a few tips to help reduce the risk of worms in your flock:

  • Regularly clean and replace bedding to prevent build-up of droppings and bacteria
  • Keep the chicken coop and run dry to reduce the likelihood of worm survival
  • Rotate your chickens’ grazing area to prevent overgrazing and the accumulation of worm eggs
  • Practice good biosecurity measures, such as utilizing foot baths and not sharing equipment with other poultry keepers
  • Isolate new chickens and treat them for worms before introducing them to your existing flock

Regular Checkups and Routine Deworming

It’s essential to monitor your flock closely and conduct regular health checks. If you notice any signs of illness or worm infestation, consult with a veterinarian for guidance. While some chicken keepers prefer to deworm their flock on a routine schedule, others prefer to do so only when infestations are present. Work with your veterinarian to determine the best approach for your flock.


Deworming is an essential aspect of chicken care, ensuring that your backyard flock remains healthy, happy, and productive. By understanding the types of worms, the symptoms of infestation, and the various deworming methods, you can take the necessary steps to protect your chickens and enjoy the many benefits they provide.

Natural Deworming Alternatives

Some backyard chicken owners prefer to use natural alternatives for deworming their flock. While natural remedies may not be as effective as conventional dewormers, they can still offer some benefits in the prevention and control of worm infestations. Here are a few natural alternatives to consider:

  • Apple Cider Vinegar: Adding a small amount of apple cider vinegar to your chickens’ water can help create a mildly acidic environment that may be less hospitable to worms. Use a ratio of about 1 tablespoon per gallon of water.
  • Garlic: Garlic is believed to have natural antiparasitic properties. Add crushed or minced garlic to your chickens’ feed to help keep worms at bay.
  • Diatomaceous Earth (DE): Food-grade diatomaceous earth can be mixed into your chickens’ feed, with some chicken keepers believing it may help control worms by damaging the worms’ outer layer. However, the effectiveness of DE as a dewormer is still up for debate.
  • Pumpkin Seeds: Raw, unsalted pumpkin seeds are thought to contain a compound called cucurbitacin, which might paralyze worms and help expel them from the chickens’ digestive system. Including these seeds in your chickens’ diet may help keep worm populations under control.

Keep in mind that while these natural alternatives may be helpful, they are no substitute for a proper deworming program under the guidance of a veterinarian. Consult your vet before implementing any natural deworming alternatives, especially if the health of your flock is at stake.

Assessing the Health of Your Flock Post-Deworming

Once you have dewormed your chickens, it’s crucial to monitor their health closely for improvements. Look for signs that the deworming was successful, such as increased appetite, weight gain, improved egg production, and brighter comb and wattles. If your chickens do not show noticeable improvement, reach out to your veterinarian for further guidance, as they may need additional treatment or there might be another underlying health issue.

Developing a Long-term Deworming Plan

Deworming is an ongoing process, so it’s essential to develop a long-term plan to keep your chickens healthy. With the help of your veterinarian, create a deworming schedule that accounts for your flock size, the types of worms prevalent in your area, and the best methods for prevention and treatment. A comprehensive deworming plan will set your chickens on the path to good health and ensure the continued success of your backyard poultry endeavor.

Frequently Asked Questions about Deworming Chickens

Do you still have questions about deworming your backyard chickens? Here’s a helpful FAQ section covering some of the most common questions on this important aspect of chicken care.

1. How often should I deworm my chickens?

The frequency of deworming depends on several factors, including the health of your flock, the environment, and the type of worms affecting your chickens. Consult with your veterinarian to develop a deworming schedule that best suits your flock.

2. How can I prevent worm infestations in my backyard chickens?

Regular cleaning of the coop, proper sanitation, rotating grazing areas, and practicing good biosecurity measures can significantly reduce the likelihood of worm infestations in your chickens.

3. Can I eat the eggs of chickens that have been dewormed?

It’s recommended to follow an “egg withdrawal” period after administering dewormers, meaning not consuming the eggs for a specified time. Check the product labels or consult with your veterinarian for the recommended egg withdrawal duration.

4. How do I know if my chickens have worms?

Signs of worm infestations may include weight loss, decreased egg production, diarrhea or irregular droppings, and lethargy. Consult with a veterinarian for a proper diagnosis if you suspect your chickens have worms.

5. Can my chickens get worms from wild birds?

Yes, wild birds can carry and transmit worms, such as roundworms and gapeworms, to your chickens. Preventing contact between wild birds and your flock can help reduce the risk of transmission.

6. What happens if worms go untreated in chickens?

Untreated worm infestations can lead to malnutrition, decreased egg production, and even death in severe cases. It’s essential to treat your chickens for worms if you suspect an infestation.

7. Can I use over-the-counter dewormers for my chickens?

Several over-the-counter dewormers, such as fenbendazole and ivermectin, are commonly used for chickens. However, always consult with your veterinarian before administering any deworming treatments.

8. Can chickens pass worms to humans?

While some types of worms, such as roundworms, can theoretically infect humans, the risk is relatively low. Practicing good hygiene and using gloves when handling chickens or cleaning their environment can help reduce the risk of transmission.

9. Are there any natural alternatives to deworming chickens?

Natural alternatives such as apple cider vinegar, garlic, diatomaceous earth, and pumpkin seeds can be used alongside a proper deworming program. However, consult with your veterinarian before implementing these methods.

10. Should I treat my entire flock if only one chicken shows signs of worms?

Yes, it’s generally recommended to treat the entire flock, as worms can be easily transmitted from one chicken to another. Your veterinarian can guide you on the best course of action.

11. Can young chicks get worms?

Yes, even young chicks can contract worms, especially if they’re kept in environments with poor sanitation or have been exposed to infected adult birds. Consult your veterinarian for proper deworming protocols for young birds.

12. How long does it take for dewormers to work?

The effectiveness of dewormers can vary with the product and the specific worm infestation. You should begin to see improvements in your chickens within a few days. However, consult your veterinarian for more guidance on treatment duration and follow-up.

13. Can I use the same dewormer for chickens and other poultry?

While some dewormers may be used for multiple types of poultry, it’s always best to consult with your veterinarian to ensure you’re using the correct product and dosage for your specific situation.

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