Millipedes are small long invertebrate pests, with two sets of legs on each segment. They are known to hide in crevices and under warm moist objects, curl up into a C shape, and feed on organic matter.
Millipedes are known to infest grass clippings, wood lots, mulch, and other mediums with large concentrations of organic matter. Their populations build in the summer and can reach exceptionally large amounts, meaning they can cause problems in the summer and fall. Removal of hiding sources and moisture can help to combat millipede infestation.