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What is Scaly Leg Mite?

Scaly leg mites (Knemidocoptes mutans) are microscopic parasites that are not visible to the naked eye. These mites burrow under the scales of a bird’s legs, feeding on the keratin and laying eggs in the process. You can often spot an infection by noticing raised, irregular scales or white crusting and scabbing between them. As the mites tunnel beneath the surface, they cause inflammation and irritation, leading to further scale lifting and, in severe cases, deformity of the legs.

While scaly leg mites are more commonly found in breeds with feathered feet —such as Silkies, Brahmas, and Cochins—though any chicken can become infected. Early detection and treatment are key to managing this condition and preventing long-term damage.

Preventing Scaly Leg Mite

Preventing scaly leg mites in chickens requires good management practices and regular treatments to ensure their health and comfort. These mites can cause discomfort and long-term damage if left unchecked, so consistent care is essential. Follow these steps:

  1. Inspect regularly: Check chickens’ legs for raised scales, irritation, or redness as early signs of mites.
  2. Maintain coop hygiene: Clean and disinfect the coop frequently with a product such as poultry shield, removing waste and replacing bedding to reduce mite habitats.
  3. Provide dust baths: Offer dust baths with diatomaceous earth or wood ash to help chickens naturally repel mites.
  4. Quarantine new birds: Separate and check new or returning birds for mites before integrating them into your flock.
  5. Use regular mite treatments: Apply veterinary-approved treatments like ivermectin or Exzolt as a preventive measure or when signs of infestation are detected.
  6. Support overall health: Feed a nutritious diet and minimize stress to bolster your chickens’ natural defences against pests.

Treatment Options

1. Cheapest Option - Vasaline

Start by applying a generous amount of Vaseline to the chickens’ legs, ensuring every part is thoroughly covered. Continue this treatment daily for 7 days. This method suffocates the mites and softens the hardened scales.

2. Effective Option - Ivermectin

Ivermectin is not licensed for use in the UK for chickens. As a result, it is recommended to avoid eating their eggs for at least 7 days after the final treatment. Ivermectin is an antiparasitic medication that works by targeting the nervous system of parasites, causing paralysis and death. Many backyard poultry keepers purchase ivermectin formulated for pigeons, but the dosage must be adjusted to match the chicken’s weight. The weight-to-dosage ratio is usually provided on the product packaging. Treatment typically needs to be repeated twice more, with a 7-day interval between doses to ensure the mites are fully eradicated. If you are unsure about the correct dosage or treatment plan, consult a local veterinarian for guidance.

3. Easy Option - Exzolt

Exzolt is a relatively new product on the market and does not require an egg withdrawal period. Treatment with Exzolt is an innovative approach to targeting red mite parasites. When poultry is treated with Exzolt, the acaricide is systemically distributed throughout the bird’s body, effectively reaching the blood. When red mites feed on the chicken’s blood, they ingest the product, which kills the mites upon ingestion. However, Exzolt does require a prescription from a vet. You may find that many vets don’t stock this medication, so you would need to obtain a prescription and then purchase the product online. While Exzolt can be quite expensive, it only requires two treatments added to the chickens’ water supply, spaced 7 days apart, to effectively treat the infestation.

3. Quickest Option - Petrol and Vasaline (Not Reccomended)

Dipping a chicken’s feet into gasoline is an old-fashioned remedy and should only be used as a last resort in severe cases. On Day 1, briefly dip the legs in gasoline to kill mites on contact, then apply Vaseline to the legs to soothe the skin and suffocate any remaining mites. On Day 2, reapply Vaseline to keep the legs moisturized and ensure continued mite suffocation. On Day 3, repeat the gasoline dip followed by another application of Vaseline. While this method can be effective, it carries risks of skin irritation and health complications. Always handle with care and consult a vet to explore safer options first.