Centipede & Millipede Control Portland — What Their Presence Indicates
Centipedes and millipedes are not random visitors in Portland homes — they are indicators. High moisture in crawlspaces or basements, organic debris close to the structure, and insect populations in wall voids or lower floors all attract these arthropods reliably. Treating the population without addressing these conditions produces only temporary results.
Millipedes feed on decomposing plant matter and are driven indoors when soil becomes saturated — typically after sustained rainfall or autumn wet periods. They enter through foundation gaps, door thresholds, and utility penetrations, often appearing in large numbers overnight. Centipedes enter separately, following the insect prey populations that live in the same damp conditions.
How to Tell Centipedes and Millipedes Apart
Centipedes move fast — one pair of legs per body segment, predatory, and capable of a mild bite if directly handled. The house centipede is the most common indoor species and is attracted by the insects it hunts. Millipedes move slowly, coil when disturbed, have two pairs of legs per segment, and feed on decaying matter rather than other insects. They do not bite but produce defensive secretions that can irritate skin and eyes.
How We Treat Centipede & Millipede Infestations in Portland
Effective control requires both chemical treatment and environmental modification. Perimeter spray reduces the population entering the structure, while moisture and harborage reduction addresses the conditions sustaining the population.