Pest Organisms / Common Pillbug
Where Found
for Common Pillbug
Outdoors, pillbugs tuck themselves under rocks, leaf litter, and mulch, staying out of sight by day because they depend on steady humidity. Source: https://ask.ifas.ufl.edu/publication/IN1099 They gather in damp organic litter around foundations and slip indoors through foundation cracks, gaps under doors, and around ground-level windows. Source: https://extension.umn.edu/insect-relatives/sowbugs-millipedes-and-centipedes The species is not native; introduced from Europe, it has spread worldwide and occurs nationwide. Source: https://ask.ifas.ufl.edu/publication/IN1099