Getting rid of mites on chickens requires a two-pronged attack: treating the birds themselves and thoroughly cleaning their living space. Mites reproduce fast, with a full generation completing in as little as one week under warm conditions, so acting quickly prevents a small problem from becoming a flock-threatening infestation. The right approach depends on which type of mite you’re dealing with and how severe things have gotten.
Identify Which Mite You’re Dealing With
The two most common chicken mites behave very differently, and knowing which one you have changes how you treat them.
Northern fowl mites live their entire life cycle on the bird, day and night. You’ll spot them by parting feathers, especially around the vent area, and looking for tiny dark specks crawling on the skin. Heavily infested birds will have visibly dirty, matted feathers near the tail, sometimes with dark scabbing on the skin underneath.
Red poultry mites (also called roost mites) hide in cracks and crevices of the coop during the day and crawl onto birds at night to feed. They’re not always red. They only turn red after a blood meal. Because they hide off the bird, you might not see them on your chickens at all. Instead, check roost bars, joints, and crevices in the coop, particularly at night with a flashlight. You may also notice them on your own hands and arms after handling roost bars.
Scaly leg mites are a third type that burrows under the scales on a chicken’s legs and feet, causing the scales to lift and crust over. Affected legs look rough, thickened, and painful. These mites are microscopic, so you diagnose them by the distinctive crusty appearance rather than seeing the mites themselves.
Why Fast Treatment Matters
A female red mite can reproduce for about 8 weeks straight, and the full life cycle from egg to egg-laying adult takes just 7 days in warm weather. That means a small population can explode within a few weeks. Heavy infestations cause blood loss that leads to pale combs, lethargy, decreased egg production, and in young or small birds, death from anemia. Chickens may also become restless at night, reluctant to enter the coop, or start feather-picking.
Treat the Birds Directly
For northern fowl mites and red mites, permethrin is the most widely available treatment. It comes in two forms: a dust (0.25% concentration) that you work into the feathers, focusing on the vent area and under wings, or a spray made by mixing 3 ounces of 10% permethrin concentrate into 5 gallons of water. When applying the dust, avoid getting it near the bird’s eyes or face, and wear gloves and a mask yourself.
Permethrin is approved for use on poultry and in poultry housing with no official withdrawal period specified. That said, one study found traces of permethrin in egg yolks up to 21 days after treatment, with residue levels peaking around 7 days. If you’re cautious about egg consumption, discarding eggs for at least a week after treatment is reasonable.
A newer option, fluralaner (sold as Exzolt), is added directly to the flock’s drinking water. It’s given twice, 7 days apart, which targets two mite life cycles. Trials show it kills 99% of mites, and it has no egg withdrawal period. This is especially useful for large flocks where individually dusting every bird is impractical.
Spinosad (sold as Elector PSP) is another effective treatment, applied as a spray to coop surfaces and housing components. It’s derived from a naturally occurring soil bacterium and is popular with keepers who prefer fewer synthetic chemicals.
Treating Scaly Leg Mites
Scaly leg mites require a different approach since they live under the leg scales. The standard treatment is ivermectin, given orally or by injection, repeated 10 to 14 days later. Some keepers use petroleum jelly or oil applied thickly to the legs to suffocate the mites, though this takes longer. Be aware that in long-standing cases, the leg damage may not fully reverse even after the mites are eliminated, because permanent changes to the scales can occur before treatment begins.
Deep Clean the Coop
Treating birds without cleaning the coop is a losing battle, especially with red mites that spend most of their time hiding in the structure. A thorough cleanout is essential.
Start by removing all birds and taking out everything movable: feeders, waterers, nest box liners, perches if they’re detachable. Strip out all litter and bedding completely. Then dry-clean the space by sweeping or blowing dust off ceilings, walls, light fixtures, and fans, working everything down to the floor. Scrape dried manure and buildup off perches and roosts. A shop vacuum is excellent for small coops.
Next comes wet cleaning. Turn off any power to the building first. Soak surfaces with warm or hot water mixed with a basic detergent like dish soap to break through organic matter. Scrub everything, then rinse thoroughly. Pay special attention to cracks, joints, and corners where mites lay eggs.
After the coop is clean and rinsed, apply a disinfectant. Bleach (chlorine compounds), iodine-based products, or phenolic cleaners like Pine-Sol all work when used at the manufacturer’s recommended dilution. Soak removable waterers and feeders in a chlorine solution of about 1 tablespoon of bleach per gallon of hot water. Let everything dry fully before adding fresh bedding and returning birds.
One often-overlooked step: seal cracks and crevices where mites hide and lay eggs. Spray foam insulation packed with fine steel wool, then topped with more foam, blocks these harborage sites permanently. This is especially important in older wooden coops with gaps between boards.
Repeat Treatments on a Schedule
A single treatment rarely eliminates mites completely because eggs and certain life stages can survive the first round. Plan on retreating birds and the coop 7 to 10 days after the initial treatment. This catches newly hatched mites before they can reproduce. A third treatment another 7 to 10 days later provides extra insurance for heavy infestations. With fluralaner in drinking water, the built-in two-dose protocol 7 days apart handles this timing automatically.
A Note on Diatomaceous Earth
Diatomaceous earth (DE) is frequently recommended online, but veterinarians generally advise against relying on it for mites. Its effectiveness is questionable, it must be completely dry to have any effect at all, and it poses real respiratory risks. Chickens have unusually delicate respiratory systems with air sacs instead of a diaphragm, and inhaling the fine silica dust can cause inflammation, chronic respiratory disease, and embedded particles in lung tissue. If you choose to use DE at all, it’s better suited as one component of a dust bath mixture rather than applied directly to birds or used as a primary mite treatment. Never use pool-grade DE, which contains crystalline silica and is outright dangerous.
Prevention With Dust Baths and Coop Management
Chickens naturally control external parasites through dust bathing, and providing a dedicated dust bath area gives them a consistent way to maintain their feathers and skin. A simple setup works well: a container at least 12 inches deep (an old crate for a few birds, a kiddie pool for a larger flock) filled with a mixture of four parts in roughly equal proportions. Use builder’s sand (cheaper than play sand and more effective), wood ash from untreated wood with large charcoal pieces scooped out, plain soil free of fertilizers or chemicals, and optionally a small amount of food-grade diatomaceous earth. Top up the mixture as it gets depleted or scattered.
Beyond dust baths, good coop hygiene is the best long-term defense. Change bedding regularly, avoid overcrowding, and inspect birds every few weeks by checking around the vent, under wings, and on leg scales. Quarantine any new birds for at least two weeks before introducing them to your flock, since wild birds and new additions are the most common sources of mite introductions. Catching a few mites early is a minor chore. Treating a full-blown infestation is a multi-week project.