The Common Basement Pest Lineup
Camel Crickets
Humpbacked, long-legged, tan-brown crickets that cluster in large numbers in damp basement corners, under utility sinks, and behind stored items. Do not chirp. Jump erratically when disturbed. Feed on organic debris. High populations indicate persistently high humidity.
House Centipedes
Fast-moving, 15-legged centipedes (Scutigera coleoptrata) that hunt other arthropods in basements and crawlspaces. Their presence in quantity indicates an established population of prey insects — camel crickets, silverfish, and spiders — that sustains them. Reducing prey reduces centipedes.
Silverfish
Carrot-shaped, silvery-gray insects found near cardboard storage, paper, and in damp wall voids. Require humidity above 75%. Full guide: Silverfish Control.
Brown Recluse Spiders
Common in unfinished Missouri basements — undisturbed storage areas, behind wall insulation, and in floor joist cavities. Basements with high camel cricket populations provide substantial recluse food. Population management requires reducing prey and harborage simultaneously.
The Dehumidification Threshold
Most basement pest problems in Missouri are humidity problems with a pest symptom. A basement maintained below 50% relative humidity year-round cannot support sustainable populations of camel crickets, silverfish, or centipedes — these species' reproduction and survival require higher moisture. A quality basement dehumidifier sized for the space and set to maintain 45–50% RH is the single highest-impact investment available for chronic basement pest pressure. It is not a pest control product, but it does more for basement pest management than any chemical treatment applied to a persistently damp space.
Perimeter treatment with residual insecticide along basement walls, under the staircase, and behind stored items addresses existing populations while humidity reduction prevents re-establishment. D&D Pest Control provides basement pest programs throughout Franklin County and rural Missouri — visit ddpestcontrolmo.com.