What does a rock louse eat?

Rock lice, also known as pillbugs or roly-polies, are actually isopods, a type of crustacean. They are decomposers, which means they eat decaying plant matter, like:

* Dead leaves

* Rotting wood

* Fruit and vegetable scraps

* Fungi

They also sometimes eat algae and lichens.

Rock lice are important for the ecosystem because they break down dead plant matter, returning nutrients to the soil.