Mold Mite (also known as Grain Mite)
Scientific Name: Tyrophagus putrescentiae
Order & Family: Order: Sarcoptiformes, Family: Acaridae
Size: 0.3–0.45 mm (extremely small, barely visible to the naked eye)
Natural Habitat
Humid environments, damp organic matter, stored food products, and areas with mold growth.
Diet & Feeding
Fungi, mold, yeasts, and high-protein/high-fat organic materials like seeds, nuts, and cheese.
Behavior Patterns
Rapid reproduction in high humidity (above 60-70%); they move quickly and can accumulate in large numbers often referred to as 'mite dust'.
Risks & Benefits
Can cause allergic reactions (dermatitis or respiratory issues) in humans and contaminate food supplies; they are generally considered household pests.
Identified on: 1/30/2026