Refers specifically to mites of the genus Dermatophagoides, commonly found in household dust and a major allergen source.
House dust mites can cause allergies.
House dust mites tend to breed in futons.
Katakana spelling is common and matches usual-kana usage.
Kanji form is rare and may not be widely recognized; learners should use kana.
Compound of 塵 (chiri, 'dust') and 蜱 (dani, 'mite'). The kanji 蜱 is obscure, so the word is normally written in kana.