All About Millipedes

Millipedes Identification Guide

Physical Characteristics

Millipedes are elongated, cylindrical arthropods with two pairs of legs per body segment. Their coloration ranges from dark brown to black, sometimes featuring lighter stripes or patterns. Unlike centipedes, they move slowly, using their numerous legs in a coordinated, wave-like motion. When disturbed, millipedes curl into a tight spiral as a defense mechanism.

Common Species

• Narceus americanus (North American Millipede)

• Oxidus gracilis (Greenhouse Millipede)

• Spirobolida spp. (Common Garden Millipedes)

Millipedes Behavior and Biology

Millipedes are detritivores, meaning they feed on decaying plant matter, fungi, and other organic material. They thrive in moist environments like leaf litter, mulch beds, and under rocks or logs. During wet seasons, millipedes may migrate in large numbers, sometimes entering homes through foundation gaps and basement cracks. Unlike centipedes, they do not bite or sting but can release a foul-smelling liquid when threatened.

How We Treat for Millipedes

Inspection and Identification

Our service professionals conduct a thorough inspection of your home, focusing on damp areas like basements, crawl spaces, and exterior landscaping. Entry points such as foundation gaps, door thresholds, and cracks are identified.

Treatment Application

• Interior Treatment: A repellent insecticide is applied along baseboards and other high-activity areas to prevent millipedes from spreading indoors.

• Exterior Perimeter Treatment: If millipedes are an ongoing issue, a granular insecticide is applied around the home’s foundation and mulch beds to target them at the source.

• Moisture Control Recommendations: Our technicians provide guidance on reducing excess moisture—one of the main attractants for millipedes. This may include improving drainage, adjusting irrigation, or removing excessive organic debris.