
Insect
Thermobia domestica
Thermobia domestica is a wingless bristletail 10–15 mm long with a mottled grey-brown scaled body, long antennae, and three tail filaments. It thrives at 32–41°C and high humidity, living up to three years and moulting throughout adulthood.
Firebrats are nocturnal and thigmotactic, hiding in tight cracks near heat sources such as boilers, ovens, water heaters, and bakery ovens. They feed on starches, glue, paper sizing, flour, and dried food residues.
Infestations show as irregular surface grazing on paper and wallpaper, tiny black pepper-like droppings, and shed scales in warm voids. Populations build quietly in mechanical rooms before spreading into pantries.
Tailored to Firebrat