Isopods - School IPM - USU Extension

    Isopods

    Isopoda

    Pill bug

    Adult pill bug (Joseph Berger, Bugwood.org)

    Pill bug

    Adult pill bugs (Gary Alpert, Harvard University, Bugwood.org)

    Pill bugs

    Pill bugs of various sizes (Wikimedia Commons)

    Identification

    • also known as sowbugs or pillbugs
    • range from 1/4 to 5/8 inch long
    • dark to slate gray
    • oval, segmented, armored bodies
    • can roll up into a tight ball when disturbed

    Nesting Habits

    • many habitats including moist soil, leaves, grass, wood piles, mulch and stones
    • require high moisture
    • come indoors when moist conditions exist

    Diet

    • decaying organic material

    Significance

    • occasionally come indoors under thresholds/doors
    • may be a nuisance indoors

    IPM Recommendations

    • Minimize moisture and hiding/feeding areas near the foundation.
    • Seal cracks around the outside foundation wall.
    • Install tight-fitting door sweeps at the base of all exterior doors.
    • Vacuum individuals that enter buildings.