How to control indoor crickets in fall?

The right response depends slightly on which cricket you have. Field and house crickets — the ones you hear chirping — wander indoors chasing warmth as fall nights cool down, and they rarely last past winter. Camel crickets, sometimes called cave crickets, look different (humped back, no wings, long legs) and behave differently: NC State Extension and University of Minnesota both note that camel crickets 'do not chirp' and are drawn specifically to damp, dark basements and crawl spaces rather than warmth in general. If you're hearing chirping at night, you likely have field or house crickets; if you're finding silent, jumpy crickets in a damp basement, it's probably camel crickets, and the moisture fix matters more than anything else.

University of Maryland Extension is direct: 'the vacuum cleaner is one of the most effective and least toxic means of eliminating invading crickets in the house.' For crickets you can hear but not easily reach — behind boxes, in a corner, near a floor drain — sticky traps placed at their singing area catch the ones a vacuum can't. Neither requires any chemical, and both work regardless of which cricket species you're dealing with.

For camel crickets especially, and for any cricket problem concentrated in a basement or crawl space, the actual driver is moisture, not a pest infestation in the usual sense. Running a dehumidifier, or fixing the leak or drainage issue creating the dampness, removes the reason crickets are drawn there in the first place. UMD's own framing makes this explicit: chemical control 'should only be used in conjunction with permanent, structural repairs and sanitation' — never as a standalone answer, because spraying a damp room doesn't dry it out, and the moisture will keep drawing new crickets in regardless of how many you kill.

Crickets get in the same way most fall invaders do: foundation cracks, gaps around utility penetrations, worn door sweeps and weatherstripping. Sealing those, along with reducing outdoor lighting (which draws crickets and other night-flying insects toward the house) and clearing woodpiles or debris from the foundation perimeter, is straightforward homeowner work that meaningfully reduces how many crickets wander in at all. Combined with vacuuming, trapping and moisture control, this is a control plan that really doesn't need a chemical component for the overwhelming majority of homes.