Camel crickets have a way of startling people who encounter them. They are large, brownish, humpbacked, and equipped with extremely long legs, and they move in sudden erratic jumps. The combination is unsettling if you are not expecting it. But they are harmless insects. They do not bite people, they do not chirp, they do not carry disease, and they do not damage your home. They are a moisture indicator first and a nuisance second.
Identification
Adults range from about half an inch to one and a quarter inches in body length, not counting the legs. The legs are long relative to the body, particularly the hind legs, which are built for jumping. The antennae are even longer, often two to three times the body length, and are held out forward. The body is light tan to medium brown, often with darker mottling, and the back arches into a distinct hump, which gives the insect its common name.
There are no wings. Camel crickets are completely silent. That is one of the reliable differences from house crickets, which are smaller, rounder, and capable of the chirping that people associate with crickets. A large, silent, humpbacked cricket in a dim basement is almost certainly a camel cricket.
Multiple native species occur across the Upper Midwest and Mid-Atlantic. The greenhouse camel cricket (Diestrammena asynamora), introduced from Asia, is now common indoors throughout the eastern United States alongside native species. The biology and management are the same.
Behavior and Habitat
Outdoors, camel crickets live under logs, rocks, and dense vegetation, in caves, and in leaf litter. They are omnivores, feeding on plant material, fungi, and organic debris. They are nocturnal and avoid light. Inside, they seek conditions that match their outdoor preference: dark, cool, and damp.
Basements and crawl spaces are the primary indoor habitat. Specifically, they concentrate in the dampest zones: near sump pump pits, under utility sinks, in crawl spaces with moisture problems, in damp corner storage areas, and around any persistent water source. They do not move into dry, finished living spaces on their own. If you are finding them regularly on upper floors or in dry rooms, there is almost always a structural moisture or entry point issue worth investigating.
They do not establish in wall voids the way overwintering insects like stink bugs do. The population you see in your basement is living there, not just passing through on the way to a wall cavity.
Signs of an Infestation
You will usually see the crickets themselves. They are large enough to notice. Populations that have built up in a crawl space may damage fabric, cardboard boxes, and paper stored in damp areas, since they will chew on organic material when food is scarce. Small, irregular holes in stored cardboard or fabric in a damp storage area can indicate camel cricket activity. You may also find shed exoskeletons or fecal pellets in areas of concentrated activity.
Unlike most cricket species, there is no chirping. If you have a chirping cricket problem, you have a different species, likely a house cricket.
Health and Property Risks
Camel crickets are not a health risk. They do not bite, they do not transmit disease, and they are not venomous. The wolf spiders that sometimes follow them into damp basements hunting for prey can cause more alarm. The main property concern is minor damage to stored items in heavily infested basements: chewing on cardboard, paper, and fabric stored in damp areas. This is unlikely to be significant unless the infestation is large and the storage is close to the ground in a moisture-prone area.
Treatment Options
Moisture control is the primary fix. A camel cricket population in a basement or crawl space is a signal that conditions are hospitable. Fix the conditions and the population declines. Run a dehumidifier in the affected space and keep it below 50 percent relative humidity consistently through the warmer months. Address any standing water sources, repair basement window leaks, improve crawl space drainage, and ensure the crawl space vapor barrier is intact and covering the soil.
Sticky traps are genuinely effective for camel crickets. Place them flat on the floor in corners, near sump pits, and along walls where activity is heaviest. They capture insects reliably and also serve as population monitors. Change them as they fill.
Pesticide sprays have limited value in a basement. A contact insecticide kills individuals on contact, but the population rebounds as long as damp conditions persist. Residual sprays along the basement perimeter reduce numbers but are a secondary measure to moisture control. A professional treatment typically combines a perimeter application with moisture management recommendations and a look at exterior entry points around the foundation and basement windows.
Prevention
Keep the basement and crawl space dry. That is the most important prevention step by a significant margin. Dehumidification, drainage repairs, gutter extensions to move water away from the foundation, and vapor barriers in dirt crawl spaces all reduce the habitat that allows camel cricket populations to build.
Reduce clutter on the basement floor. Cardboard, stored fabric, and organic debris provide shelter and food. Move storage into sealed plastic bins and keep firewood away from the foundation.
Seal gaps around the foundation: cracks in the block or concrete, gaps around basement windows, spaces where pipes enter the wall. Camel crickets move through any substantial opening at grade level, particularly in fall.
A consistently damp crawl space is worth addressing for its own sake. It contributes to wood rot, elevated indoor humidity, and conditions favorable to subterranean termites. Fixing it helps across multiple problems at once.
What It Costs
Professional treatment of a basement or crawl space runs $100 to $250 for a single visit. If the job includes entry point sealing, expect $200 to $400. Recurring pest plans that cover occasional invaders run $40 to $75 per visit. A capable dehumidifier runs $200 to $500 and reduces multiple pest problems at once. Crawl space encapsulation, if the moisture problem is significant, runs $3,000 to $8,000 but is a home improvement with benefits well beyond pest control.
When to Call a Professional
Call a pest control operator if sticky traps and moisture control are not reducing the population over a few weeks, or if the infestation is in a crawl space you cannot assess on your own. A crawl space full of camel crickets is worth a professional look because moisture problems there are sometimes worse than they appear from the access hatch. Camel crickets alone are not an emergency, but the damp crawl space they are thriving in may need attention.