Where are firebrats usually found indoors?

The firebrat (Thermobia domestica) is a wingless insect belonging to the order Zygentoma, a group often classified within the apterygote insects.12

When found indoors, firebrats typically inhabit warm environments. They are commonly discovered near heat sources such as fireplaces, furnaces, and water heaters. Because they thrive in these conditions, they are also associated with warm, moist areas within a home.13

As they feed on starches, their presence can lead to damage to books, fabrics, and stored food products.1