The short answer
- Find and remove the host first: a rodent infestation or a bird nest in an attic, soffit, vent or chimney. Mite treatment fails until the host is gone.[1]
- Collect a few mites before anyone treats: pick them off skin with an artist's brush or tissue dipped in rubbing alcohol, or use sticky tape or sticky traps, and keep them in alcohol for identification.[1]
- Treat for mites at the same time as, or even before, removing rodents, so mites don't scatter from abandoned nests.[1]
- Unlike bed bugs, these mites don't hitchhike on people or belongings to other places.[1]
Which mites bite people
The tropical rat mite is one of the most common house-invading species. The tropical fowl mite and northern fowl mite come mainly from domestic or wild birds, and the house mouse mite turns up where house mice are present.[1]
- Rat and bird mites are about the size of the period at the end of a sentence and move actively; they don't hop or fly, but can crawl several yards from a nest.[1]
- Telling the species apart, and so whether birds or rodents are the source, takes special expertise, so look for all possible hosts.[1]
- Pet rodents such as gerbils, white mice or hamsters can carry mites; have them checked by a vet if bites occur near them.[1]
Clues from the season
Rodent-related mite problems can happen any time but are most frequent in fall and winter; bird-related ones are most common in spring and summer. Chirping from a chimney or soffit often signals a nest, and chickens kept in coops attached to a home can also be a source.[1]
Removing the host
- Seal vents and utility entry points with metal hardware cloth, metal flashing or copper wool, check around chimneys and loose shingles, and make doors and windows seal tightly.[1]
- Roof rats are good climbers that enter through roof and soffit openings; noises in the attic or ceiling at night are a sign. House mice enter near ground level and can squeeze through a hole the size of a dime.[1]
- Screen chimneys to keep birds out; a bird nest in a chimney may also mean the chimney needs cleaning.[1]
Treating for mites
- Before removing a nest, spray the area around it, or dust it with a desiccant dust, so live mites don't scatter indoors when the nest comes out.[1]
- Wear long sleeves, gloves and a tight-fitting dust mask when removing old bird or rodent nests.[1]
- Sprays or aerosols with synergized pyrethrins kill mites on contact but don't last; pesticides only suppress mites when combined with bird or rodent control.[1]
Mites that don't bite
- Clover mites are reddish, about 1 mm long, with a long front pair of legs. They feed on grasses and weeds and wander in through windows and doors in late winter and early spring, but don't bite.[1]
- Grain mites infest processed cereal products such as flour; they are uncommon in homes and can only be told from parasitic mites under a microscope, so where you find them is the best clue.[1]
Common questions
- How do I know if I have bird mites or rat mites?
- Collect some of the mites and look for the host: bird nests in soffits, vents and chimneys, or signs of rats and mice. Identifying the species takes expertise.[1]
- Why did the bites start after the exterminator came?
- Mite problems are often first noticed after rodents are killed or birds leave, because the hungry mites leave the nest looking for a new host.[1]
- Can bird mites live on people?
- No. None of these species is truly parasitic on humans, though they bite readily.[1]
Sources
- Texas A&M AgriLife Extension (Michael Merchant and Pete Teel), “Biting Mites.” citybugs.tamu.edu/factsheets/biting-stinging/others/ent-3009/ (accessed 2026-10-06)