Mold Mite (also known as Grain Mite or Dust Mite depending on specific context)
Scientific Name: Tyrophagus putrescentiae
Order & Family: Order: Sarcoptiformes, Family: Acaridae
Size: 0.3 to 0.5 mm (nearly microscopic, appearing as tiny white moving specks)
Natural Habitat
Found in environments with high humidity, such as damp homes, kitchens, bathrooms, and stored food products with mold growth.
Diet & Feeding
Primarily feeds on mold, fungi, and sometimes high-protein or high-fat stored food products like grains, nuts, and cheese.
Behavior Patterns
They congregate in large numbers where moisture and food sources are available. They reproduce rapidly in humid conditions and can appear as a white dust that seems to move.
Risks & Benefits
They do not bite humans or pets but can cause allergic reactions, asthma, or skin irritation (grocer's itch). They are a significant nuisance pest in pantries and indicate a moisture or mold problem in the home.
Identified on: 5/21/2026