Chicken Mites: How to Spot and Get Rid of Them

Last updated: September 2026

Quick answer: Check for mites after dark with a torch, around the vent and the base of the tail feathers, because that is where they cluster and when they feed. Treat the birds and the coop on the same day with a poultry-labelled permethrin or spinosad product, then repeat in 7 days to kill the eggs that hatched after the first round. Skipping the second treatment is why infestations come back.

Signs of a mite infestation

Mites drain blood. A heavy load will kill a hen in weeks and will stop her laying long before that, so catching it early genuinely matters.

• Pale comb and wattles from anaemia. This is the clearest single sign and it is easy to see.
• Birds refusing to go into the coop at night, or roosting outside. They are avoiding where the mites are.
• Restlessness on the roost, constant preening, scratching, head shaking.
• Dirty-looking grey or black specks at the base of feathers near the vent, which are mites and their droppings.
• Tiny red or black dots moving on skin, eggs or your own arms after handling.
• Feather loss around the vent, back and tail base, with red or scabby skin underneath.
• Egg production drops or stops entirely.
• Weight loss despite normal appetite.
• Blood spots on eggs or on the underside of perches.

The behavioural sign is the one people miss. If your flock suddenly will not go in at dusk, do not assume they are being difficult. Go and look at the roost after dark.

Which parasite do you have?

Treatment differs, so identify what you are dealing with before buying anything.

The critical practical difference: northern fowl mites live on the bird, so treating the bird solves it. Red mites live in the coop and only visit the bird at night to feed, so treating the bird alone does nothing at all. If daytime inspection of your hens turns up nothing but they clearly have something, you have red mites and the problem is your coop.

Lice are a different animal entirely. They eat skin and feather debris rather than blood, so they are less dangerous, and the giveaway is clusters of white eggs cemented to the feather shafts near the vent.

How to check properly

1. Go out after dark with a torch. Red mites only emerge at night, so a daytime inspection of the coop tells you very little.
2. Lift a bird off the roost and part the feathers around the vent and at the base of the tail. Look at the skin itself, not the feather tips.
3. Run a white cloth or paper towel along the underside of the perch and inside the perch supports. Red smears mean blood-fed mites.
4. Check the ends of perches, cracks, nest box corners and any joint in the woodwork. Red mite colonies look like grey ash or fine dust, and it moves if you watch it.
5. Look at the legs. Raised, crusty, lifted scales mean scaly leg mite.

Do this monthly in warm weather. It takes five minutes and it catches problems while they are still easy to fix. Densely feathered breeds such as Silkies need checking more often, because the fluff hides everything.

Why you must treat twice

This is the single most common reason mite treatment fails.

Mites go from egg to adult in about 7 days in warm weather. Almost every treatment kills adults and juveniles but does not reliably kill eggs. So one treatment clears the visible population, the surviving eggs hatch a few days later, and by week three you are back where you started and assuming the product did not work.

The fix is simple: treat, then treat again 7 days later, and in a heavy infestation a third time at day 14. That second round catches everything that hatched after the first, before it can lay eggs of its own.

Treating the birds

Always read the label and follow the egg withdrawal period. Some products are approved for laying hens with no withdrawal at all; others require you to discard eggs for days. This is a legal requirement as well as a food-safety one, and “it is only for my family” is not an exemption in many jurisdictions.

How to apply a dust: work outdoors on a still day, hold the bird firmly, and work the powder against the feather direction down to the skin around the vent, under the wings, along the back and at the base of the tail. The powder has to reach skin; dusting the outside of the feathers achieves nothing. Wear a mask and gloves.

Treat every bird on the same day. Leaving one untreated bird reseeds the whole flock.

One caution: if a hen is mid-molt with open pin feathers, handling and dusting are painful for her. Be gentle, and if she is not badly affected consider treating the coop first and her a week later.

Treating the coop

For red mites this is the whole job. For northern fowl mites it stops reinfestation.

1. Remove all bedding and nesting material and bag it. Burn it or bin it, do not compost it near the coop.
2. Scrape everything down, particularly perch ends and joints.
3. Pressure wash or scrub with hot water and detergent. Let it dry fully.
4. Spray every crack, crevice, joint and perch socket with a poultry-approved product. The mites live in the gaps, not on the surfaces.
5. Consider a blowtorch on bare timber, carefully, run along cracks. Very effective on red mite, but obviously a fire risk near bedding.
6. Repeat in 7 days, same as the birds.
7. Replace bedding with fresh material only after the second treatment.

Smooth, sealed surfaces give mites nowhere to hide, so painting or sealing rough interior timber is a genuinely effective long-term fix. Worth building in if you are constructing from coop plans, and worth knowing that removable perches are far easier to treat than fixed ones.

Scaly leg mites

A different parasite that burrows under the leg scales, causing them to lift, thicken and crust. It is painful, progressive and in bad cases causes lameness and deformity.

The treatment is suffocation rather than poison. Soak the legs in warm soapy water to soften the debris, dry them, then coat the legs and feet thoroughly in petroleum jelly, or a vegetable or mineral oil. The coating blocks the mites’ air supply. Repeat every few days for three weeks to cover the life cycle.

Do not pick the crusts off. They are attached to living tissue and will bleed. The scales take months to look normal again even after the mites are gone, because scales only shed at a molt, so do not judge success by appearance for a while.

Do natural remedies work?

An honest assessment, because there is a lot of confident misinformation here.

The blunt version: a dust bath and a clean dry coop will stop most infestations starting, and that is where natural methods earn their place. Once you have an active infestation draining blood from your birds, use a proper acaricide. Waiting to see whether diatomaceous earth works while a hen goes anaemic is not a kindness to her.

Preventing reinfestation

• Provide a permanent dust bath. Dry soil, sand and a little wood ash, kept under cover so it stays dry. This is how chickens manage parasites themselves and it costs nothing.
• Quarantine new birds for 2-4 weeks before they join the flock, following the process in introducing new chickens. New birds are the most common way mites arrive.
• Discourage wild birds from roosting on or near the coop, since they carry northern fowl mites.
• Keep the coop dry and well ventilated. The same conditions that prevent respiratory illness discourage parasites.
• Inspect monthly after dark in warm weather.
• Do not overcrowd. Crowding spreads parasites fast, so check the figures in how much space chickens need.
• Control rodents, which carry mites in as well as attracting larger predators.

Clinical detail on external parasites of poultry is in the Merck Veterinary Manual, and research-backed flock health guidance is free at Poultry Extension.

Frequently asked questions

How do I know if my chickens have mites?

Check after dark with a torch around the vent and the base of the tail feathers. Look for moving specks, dark grey debris on the skin, and a pale comb. Birds refusing to enter the coop at night is a strong behavioural clue.

Can chicken mites live on humans?

They will bite you and cause itchy welts, but they cannot complete their life cycle on people and will not establish an infestation. The bites stop once the birds and coop are treated.

How long does it take to get rid of chicken mites?

Two to three weeks with correct treatment. Treat birds and coop on the same day, repeat at 7 days, and add a third round at 14 days for a heavy infestation.

Does diatomaceous earth kill chicken mites?

Only while completely dry, and it is unreliable against an active infestation. It is also a respiratory irritant for birds and people. Use it as a minor preventative at most, not as a treatment.

Can I eat eggs while treating for mites?

It depends entirely on the product. Many poultry-labelled permethrin products and spinosad have no egg withdrawal period, while others require discarding eggs for several days. Read and follow the label, which is a legal requirement.

Do mites stop chickens laying?

Yes. Blood loss and constant irritation will reduce or stop production, and it is one of the causes covered in why chickens stop laying eggs.

Where do chicken mites come from?

Most often from newly introduced birds, wild birds roosting near the coop, rodents, or second-hand equipment. Quarantining new birds for 2 to 4 weeks prevents the most common route.

Is my chicken molting or does it have mites?

A molting hen has waxy pin feathers coming through clean skin and loses feathers from the head and neck first. Mites cause feather loss around the vent and tail base, with red scabby skin, a pale comb and weight loss. Full comparison in chicken molting.

Keeping a healthy flock? See how long chickens live for the management factors that add years, and what chickens eat for the nutrition side.