Getting rid of red mites requires a combination of deep cleaning, targeted treatment of hiding spots, and repeated applications over several weeks. Red mites reproduce fast, completing their entire life cycle in as few as seven days, so a single treatment rarely solves the problem. The approach depends on which type of red mite you’re dealing with: poultry red mites in a chicken coop, red spider mites on plants, or clover mites invading your home.
Identify Which Red Mite You Have
Poultry red mites are the most common reason people search for help. These tiny parasites live in cracks and crevices of chicken coops during the day and crawl onto birds at night to feed on blood for about an hour before retreating. They turn red after feeding but appear gray or white when unfed. If your chickens seem restless at night, have pale combs, or you notice tiny dots moving along roost bars after dark, poultry red mites are the likely culprit.
Red spider mites attack plants rather than animals. They pierce plant cells, causing stippled leaves that yellow and eventually die. You’ll often see fine webbing on the undersides of leaves. Outbreaks escalate quickly in warm, dry conditions.
Clover mites are the ones that show up on windowsills and walls inside homes, especially in spring and fall. They’re reddish-brown, about the size of a pinhead, and leave a red smear if you crush them. They don’t bite or damage your home, but they can appear in large numbers.
Clearing Poultry Red Mites From Your Coop
Poultry red mites are the hardest of the three to eliminate. They hide deep in cracks, joints, and crevices during daylight hours, and adults can survive up to eight months without a blood meal. That means simply removing your chickens and waiting won’t starve them out. You need a layered strategy: clean, treat, and repeat.
Step 1: Strip and Deep Clean
Remove all bedding, nesting material, perches, feeders, and waterers from the coop. Scrub every surface. The goal is to expose as many hiding places as possible before you apply any treatment. If your coop has unpainted wood with lots of cracks and joints, you’re dealing with far more hiding spots than a coop with painted or sealed interior walls. Consider painting the interior after cleaning to reduce crevice habitat long-term.
Step 2: Apply Heat or Cold
Temperatures above 113°F kill red mites. If you can seal up the coop on a hot day with the flock removed, the trapped heat may reach lethal levels. In winter, temperatures below -4°F are also lethal. Steam cleaning is another effective option because it forces high heat directly into cracks and joints where mites shelter. Heat has a major advantage over chemical sprays: it kills mites on contact regardless of resistance.
Step 3: Treat Cracks and Crevices
This is where most people underestimate the job. Spraying the surface of a coop wall does very little. You need to force liquid treatment down into every gap, joint, and crack where mites hide. Most coop owners go through more than a gallon of spray to treat a standard coop thoroughly. Focus on roost bar ends, where perches meet walls, nest box corners, and any joint in the structure.
Many chemical products that once worked against red mites have lost effectiveness due to resistance. Mite eggs are also resistant to most chemical treatments, which means you’ll need to reapply after 7 to 10 days to catch newly hatched nymphs. Keep feed, water, and feeding equipment out of the coop during treatment, and check the product label to confirm whether birds can be present.
Step 4: Use Diatomaceous Earth as Ongoing Defense
Food-grade diatomaceous earth (DE) is a powder made from fossilized shell organisms containing 80 to 90 percent silica. When mites crawl through it, the microscopically sharp particles scratch their waxy outer coating, causing them to lose moisture and die from dehydration. It’s not an instant knockdown treatment, but it works well as a preventive layer between deeper cleanings.
Spread DE into cracks, crevices, and nest box areas. Rub it along perches and scatter it on the coop floor after cleaning out old bedding. You can also fill a shallow tray with DE and dry soil so your hens can dust-bathe in it, which helps control mites directly on the birds. DE loses effectiveness in humid conditions, so you’ll need to apply more during wet weather.
Wear gloves and a dust mask when applying DE. Breathing in the dust can irritate your nose and airways, and prolonged exposure to crystalline forms of silica is linked to serious respiratory problems. Pesticide-grade DE products contain very low levels of crystalline silica, but food-grade DE is primarily the amorphous form, which clears from lung tissue quickly. Stick to food-grade only around poultry.
Step 5: Repeat on a Schedule
Because the full mite life cycle takes as little as seven days, a single treatment will miss eggs that haven’t hatched yet. Plan to repeat your treatment at least once, ideally twice, at 7- to 10-day intervals. Check roost bars with a flashlight after dark to monitor whether mite numbers are dropping. You’ll see them as tiny moving specks near where birds sit at night.
Eliminating Red Spider Mites on Plants
Red spider mites on garden plants or greenhouse crops call for a completely different approach. These mites thrive in warm, dry conditions, so the first step is raising humidity around affected plants by misting leaves regularly or grouping plants closer together.
For small infestations, spraying the undersides of leaves with a strong stream of water knocks mites off and disrupts their colonies. For larger or persistent problems, biological control using predatory mites is one of the most effective strategies. Phytoseiulus persimilis is a specialist predator that consumes large numbers of spider mites daily and works especially well in warm, humid environments. Neoseiulus californicus is a generalist that tolerates a wider range of conditions and works well as a preventive measure at low mite densities. Both are available commercially in bottles for spot treatment or slow-release sachets for gradual, continuous control in greenhouses.
Predatory mites are living organisms, so avoid using broad-spectrum pesticides alongside them. If you prefer sprays, insecticidal soap or horticultural oil applied directly to infested leaves can reduce populations, though repeat applications are necessary since these only kill mites on contact.
Stopping Clover Mites From Entering Your Home
Clover mites are more of a nuisance than a true pest. They don’t bite, don’t reproduce indoors, and die within a few days inside your home from dehydration. The priority is removing them without staining your surfaces and preventing future invasions.
Inside, use a strong vacuum to collect them. Don’t crush them against walls or fabrics because their body fluids leave a reddish stain. Chemical treatment indoors isn’t necessary since they’ll die on their own.
Outside, the most effective long-term fix is creating a bare perimeter. Removing grass from a strip 6 to 24 inches wide around your home’s foundation acts as a deterrent, since clover mites migrate from lawns onto structures. You can also apply a registered insecticide to the exterior of the house up to the bottom of the first windows, plus surrounding shrubs and lawn up to 15 feet out. Since clover mite eggs tend to hatch after rain, repeated applications may be necessary through the spring season.