Camel cricket droppings are tiny, dark, cylindrical pellets that look a lot like coffee grounds or coarse black pepper. If you’ve found small dark specks or smears in your basement, crawl space, or garage, camel cricket frass (the technical term for insect poop) is one of the most likely explanations.
What Camel Cricket Poop Looks Like
Each pellet is slightly elongated with rounded edges, roughly the size of a grain of sand or smaller. Fresh droppings look shiny and moist, while older ones dry out and turn grayish or dusty. When camel crickets are present in large numbers, their droppings don’t just accumulate in neat piles. They smear frass across walls, floor joists, and other surfaces, leaving dark streaks that are often the first visible sign of a serious infestation.
You’ll typically find these droppings in damp, dark areas where camel crickets spend their days hiding: along basement walls, in corners of crawl spaces, near floor drains, behind boxes, and around utility pipes. The droppings tend to concentrate near their hiding spots, so a cluster of dark specks in one area usually means crickets are roosting nearby.
Camel Cricket Droppings vs. Mouse Droppings
This is one of the most common mix-ups homeowners make, and the distinction matters because it changes what you’re dealing with. Mouse droppings are noticeably larger, about 1/8 inch long (roughly the size of a grain of rice), and have pointed ends. Camel cricket droppings are much smaller with rounded edges. If what you’re looking at resembles scattered grains of black pepper, you’re almost certainly looking at insect frass rather than rodent waste.
The other key difference is the pattern. Mouse droppings are individual pellets scattered along travel routes, often near food sources. Camel cricket frass appears as both individual specks and dark smears on vertical and horizontal surfaces. Those smears are distinctive and not something mice produce.
Staining and Surface Damage
Camel cricket frass can stain porous surfaces like concrete, drywall, cardboard, and fabric. The dark smears on basement walls and floor joists are essentially fecal streaks left behind as crickets move through their environment. On light-colored surfaces, these stains are conspicuous and can be difficult to fully remove once they’ve set in.
The droppings themselves aren’t the only concern. Camel crickets are opportunistic feeders. When they can’t find their preferred food (fungus and decaying organic matter), they’ll eat carpet, cardboard, wood, and even each other. So if you’re seeing frass, there’s a reasonable chance you’re also dealing with minor damage to stored items, especially cardboard boxes and natural-fiber textiles in damp storage areas.
How to Clean It Up
For loose droppings on hard surfaces, vacuuming with a hose attachment is the easiest approach. A damp cloth or sponge with a mild all-purpose cleaner handles the smears on walls and floor joists. On concrete, you may need a stiff brush. For fabrics or carpets that have been stained, an enzyme-based cleaner breaks down the organic material more effectively than standard household cleaners.
Wear gloves during cleanup. While camel cricket droppings aren’t known to carry the same disease risks as rodent droppings, any accumulation of insect waste can contribute to poor indoor air quality, particularly in enclosed spaces like crawl spaces with limited ventilation. If frass has built up on stored clothing or linens, wash them in hot water before using them again.
Controlling the Source
Cleaning up the droppings without addressing the crickets themselves means you’ll be cleaning again in a few weeks. Camel crickets thrive in moisture, and reducing humidity is the single most effective long-term fix.
A dehumidifier in your basement or crawl space, aimed at keeping relative humidity below 60%, makes the environment far less hospitable. Beyond that, seal gaps around pipes, dryer vents, and foundation cracks where crickets enter. They’re surprisingly good at squeezing through small openings. Remove leaf litter, mulch, and wood piles from directly against your foundation, since these create the cool, damp microhabitats camel crickets love right next to your home’s entry points.
Sticky traps placed along walls and in corners where you’ve found droppings give you a quick read on how many crickets are active and whether your control efforts are working. If you’re catching dozens on a single trap, you likely have an established population that may benefit from a perimeter insecticide treatment around the foundation exterior.