Mold Mite
Scientific Name: Tyrophagus putrescentiae
Order & Family: Order: Sarcoptiformes; Family: Acaridae
Size: 0.3–0.5 mm (barely visible to the naked eye, appearing as moving white dust)
Natural Habitat
High-humidity environments containing organic matter, including kitchens, pantries, bathrooms, and areas with damp cardboard or mold.
Diet & Feeding
Primarily feeds on mold, fungi, and products high in fat or protein such as grains, cheese, and dried meats.
Behavior Patterns
They congregate in large numbers where food sources are available. Their life cycle is rapid in humid conditions, moving from egg to adult in under 20 days.
Risks & Benefits
They do not bite or sting humans, but they can cause 'grocer's itch' (allergic dermatitis) or respiratory irritation in sensitive individuals. They indicate a moisture or mold problem in the home.
Identified on: 5/30/2026