It is 2 a.m. The house is quiet, and a sharp, continuous chirping comes from somewhere in the kitchen or living room. You get up and switch on the light, and the sound stops instantly; the moment you return to bed, it starts again. This is the house cricket, one of the insects that ruins sleep most often, even though it neither bites nor spreads disease.
The problem is that most people treat it like an ordinary cockroach, spraying pesticide in the middle of the room and wondering why it is back the next night. The cricket behaves very differently: it comes in from outside, is drawn to light and moisture, and hides in specific places. Once you understand these three things, you can close off its route.
Scientific name: The house cricket, Acheta domesticus, and the similar tropical house cricket, Gryllodes sigillatus.
Size and color: The house type is pale yellowish brown, roughly 16 to 21 mm long, with three dark crosswise bands on the head.
Where it lives: It gathers around building foundations and doors, enters through cracks, and is attracted to outdoor lighting.
How dangerous it is: It does not sting or spread disease, and may give a weak nip if held in the hand. Its nuisance is the nightly chirping.
Best time to control it: At the start of the season when it appears, or after heavy rain, by changing outdoor lighting and sealing entry points first.
Why do crickets come into the house in the first place?
Most crickets you see indoors were not born there. They came in from outside for one of three reasons:
- Light: Adults fly and crawl toward white outdoor lighting at night, gathering at doors, windows and entrance thresholds, then slip in through the first opening they find.
- Moisture: They look for damp places, which is why you find them around irrigated gardens, under plant pots, near air-conditioner drains, and in bathrooms, storerooms and basements.
- Temperature changes: As nights cool in early winter they look for warmth, and in extreme heat they flee dry soil for the shade and humidity around buildings.
There is also a fourth reason many people overlook: keeping reptiles or birds and buying live crickets as feed. These insects escape easily from their containers, and the species used is usually the house cricket, which can live and breed indoors. If the chirping started after you brought home a tub of feeder crickets for a lizard or bird, you have found the source.
House cricket or field cricket?
Crickets belong to the order Orthoptera, along with grasshoppers and locusts, and have nothing to do with household cockroaches despite the name. They have thin antennae longer than the body, strong hind legs for jumping, and, in the female, a long sword-like ovipositor at the tip of the abdomen used to lay eggs in soil. This needle does not sting, and it is the easiest way to tell a female from a male.
The house cricket
Its scientific name is Acheta domesticus. It is pale yellowish brown, roughly 16 to 21 mm long, with three dark crosswise bands on the head between the eyes. It likes warm, dark places in the home such as behind the refrigerator, under the water heater and around ovens, and it can complete its whole life inside buildings.
In hot climates it is joined by the tropical house cricket (Gryllodes sigillatus), which is slightly smaller with dark bands on its body, and which gathers around building foundations and doors and enters through cracks.
The field cricket
Of the genus Gryllus, it is shiny black or dark brown and ranges from about 1.5 cm to more than 3 cm in the larger species, including the two-spotted field cricket common in warm regions, which has two yellow spots at the base of its wings.
It lives in gardens, grassland and under stones, and enters homes at night looking for light and moisture, but it usually does not breed indoors because the female needs moist soil to lay eggs.
This difference matters in practice: if what you see are black field crickets, the real solution is outside (lighting, openings and the garden). If they are pale brown and you see small and large sizes together indoors, there may be indoor breeding that needs treatment in hidden areas.
Do not confuse it with the mole cricket, which lives underground and gnaws the roots of lawns, or with the cave cricket or camel cricket with its arched back, which has no wings and makes no chirping at all.
How does it make that sound, and why does it go quiet when you approach?
Only the adult male chirps. One of his front wings has a scraper-like edge and the other has a row of fine teeth like a file; he rubs the wings together quickly to produce the sound. The female does not chirp; she picks up the call with two small hearing organs on her front legs.
There are different types of chirp: a long call that attracts females from afar, a softer courtship tune when a female approaches, and an aggressive chirp when he meets another male. That is why the sound is loudest at night, the time of activity and mating.
Its silence when you approach is a natural defense: it senses floor vibration and changes in light and goes quiet. It is hard to locate because the chirp bounces off the walls and seems to come from every direction. A practical way to track it down:
- In the dark: Leave the light off and move very slowly, stopping each time the sound stops until it resumes.
- Follow the sound: It grows louder as you get closer; once you pinpoint the corner, shine a small flashlight directly on it.
- Warm places first: Start the search behind the refrigerator and washing machine, under ovens and water heaters, and among stored cardboard boxes.
An interesting fact: the chirp rate rises with temperature, because the insect is cold-blooded, so the warmer it is, the faster the male rubs. That is why the sound is quicker and sharper on summer nights than on cool ones.
Is the house cricket harmful?
The good news is that it does not sting or spread disease to people. It may nip with its jaws if you hold it, but the bite is weak and barely breaks the skin. Even so, its presence is not free of cost:
- Fabrics: Crickets eat almost anything, and they gnaw wool, silk, cotton, linen and fur, and even carpet and synthetic fabrics, especially clothing soiled with sweat or food stains. In large numbers they may gnaw wallpaper and drywall.
- Sleep and annoyance: A single male in the bedroom is enough to spoil a whole night.
- The garden: The field cricket gnaws small seedlings and annual flowers in the garden.
- It attracts worse things: Crickets are a favorite food of scorpions, spiders and geckos. A home surrounded by large numbers of crickets is an open buffet for these creatures, which is why we treat cricket control as part of a scorpion prevention plan in hot regions.
- Dead insects: Dead insects piling up in corners attract carpet beetles and other insects that feed on them.
Life cycle: why does it suddenly appear in large numbers?
The cricket goes through incomplete metamorphosis: egg, then a nymph that looks like the adult but is smaller and without fully developed wings, then the adult. The female lays eggs singly in moist soil or another damp medium such as sand and potting soil, and the nymphs molt several times as they grow.
At high temperatures between 27 and 32 degrees Celsius, the house cricket completes its cycle from egg to adult in about two to three months, so generations overlap and it appears all year in warm climates. In colder regions the field cricket spends the winter as eggs in the soil, which hatch in spring, so adults are abundant in late summer and early autumn.
That is why complaints are often seasonal: a big wave with a change in weather, after rain or heavy irrigation that drives them out of the soil, or in weeks when a building's outdoor lighting is strong.
A plan to get rid of crickets
We arrange treatment by impact: first what stops them coming in, then what removes the ones inside, with pesticide last on the list and only in the right place.
1. Change the outdoor lighting before anything else
This is the cheapest step and the most effective. Turn off unnecessary outdoor lights at night, and replace white bulbs near doors with yellow bulbs or sodium vapor lamps, which attract far fewer insects.
If lighting is needed for security, mount it on a pole away from the entrance so it shines toward the door instead of being installed directly above it. Draw the curtains at night so room light does not spill outside.
2. Close the routes
Crickets enter through small openings at ground level, so closing them cuts the route for most insects:
- Under doors: Fit a brush or weather strip under exterior doors and the garage door; the gap under a door is the first entrance.
- Cracks: Seal cracks in foundations and around water and air-conditioning pipes with silicone or a suitable filler.
- Screens and vents: Make sure window screens and vents are intact, and put a mesh cover on drains in outdoor floors.
3. Make the surroundings unwelcome
The fewer shelters and the less moisture around the walls, the fewer crickets approach the house at all:
- Piles: Move woodpiles, bricks, boards and stones away from the walls; they are ideal daytime shelters.
- Adjoining plants: Cut grass and dense plants that touch the walls, and leave a clear strip around the building.
- Moisture: Fix leaks and standing water, reduce over-irrigation near foundations, and attend to the air-conditioner drain.
- Trash: Keep trash in tightly lidded bins raised off the ground.
4. Remove what has already come in
A vacuum cleaner is the fastest way to collect live and dead crickets from behind appliances and under heavy furniture, along with eggs and the dead bodies that attract other insects. Empty the bag outside the house in a sealed bag.
Glue traps are very effective with this insect because it moves along the floor beside walls. Place them in corners, behind appliances and next to doors; they also show you where the crickets come from and which type they are.
You can also make a simple homemade trap with a deep container holding a little molasses diluted with water, placed where they appear at night; they are drawn by the smell and fall in.
5. Pesticide in cracks and around the house, not in the air
Spraying pesticide into room air or onto exposed surfaces does not help with crickets, because they hide by day and do not walk across those surfaces. Chemical control has two correct places:
- Inside the house: Spot treatment of cracks and gaps behind appliances, under baseboards and where pipes pass through. Dusts are ideal for voids your hand cannot reach.
- Outside the house: A residual spray barrier around the building, at least 30 cm wide on the ground next to the wall and about 30 cm up the wall itself, including thresholds, vents and drains. This barrier kills crickets as they approach, before they get in.
The outside barrier is temporary by nature, and you normally renew it at the start of the season or after heavy rain. Do not apply baits and sprays in the same spot, because residual pesticide may repel the insect from the bait.
Products we recommend for crickets
At Orkida Agri we match products to the right places: a residual spray for the outdoor barrier, a spot spray and a dust for indoor cracks, and glue traps for those who want a pesticide-free option:
- Demand CS by Syngenta: Lambda-cyhalothrin in microcapsule technology that stays on the surface and sticks to the insect's legs as it walks; crickets are explicitly among the pests on its label. We use it for the outdoor barrier around foundations, thresholds, vents, the garage and storerooms, at the label dose. We do not use it inside bedrooms because lambda-cyhalothrin can irritate the skin.
- Advion WDG by Syngenta: Indoxacarb 20% in water-dispersible granules. It works after the insect picks it up by contact or feeding, which stops its activity and then kills it, and its target pests include night crickets, silverfish and house centipedes. We prefer it indoors and in kitchens and storerooms as a spot spray on cracks, behind appliances and under baseboards, at the label dose.
- K-Othrine 0.05 DP by Envu (formerly Bayer): A ready-to-use deltamethrin dust that needs no mixing. We use it for voids a spray cannot reach: behind the refrigerator and ovens, under cabinets, around pipe entry points and cable openings, at the label dose. A light layer is enough, as insects avoid thick clumps.
- Catch Master glue traps: Poison-free glue boards that catch crawling insects, spiders and scorpions, suited to homes with children or anyone who does not want pesticides indoors. We place them along walls, behind appliances and next to doors, folded into a tunnel in dusty places. Their second benefit is that they show you which way insects are entering and how big the problem is.
Our standing advice with any pesticide: follow the dose written on the label and do not exceed it thinking it is stronger, and keep children and pets away until the spray dries completely.
Frequently asked questions
Does a cricket mean my house is dirty?
Not necessarily. Crickets come from outside because of light and moisture, and they enter even the cleanest homes if there is a gap under the door and a white bulb above it. But clutter, stacked cardboard and damp help them stay.
How do I find the cricket that is chirping in the room?
Turn off the light and move slowly toward the sound, stopping each time it goes quiet until it resumes. When you pinpoint the corner, shine a flashlight directly on it. Look behind warm appliances, under furniture and among stored items.
Does a cricket sting or bite?
It does not sting or spread disease. It may give a weak nip if held in the hand, which is usually harmless.
Do crickets breed inside the house?
The black field cricket rarely breeds indoors because the female needs moist soil. The pale brown house cricket, however, can live and breed inside buildings, especially near warm, damp spots.
Why are there more crickets at certain times of year?
Because their appearance is seasonal: it rises as nights cool in early winter, after rain and heavy irrigation that drives them out of the soil, and on hot summer nights when they gather around outdoor lighting.
Does having crickets attract scorpions?
Yes. Crickets are a favorite food of scorpions, spiders and geckos. Reducing their numbers around the house reduces what draws these creatures to it.
To learn about other household pests, browse the Pest Library.
For comparison with other night visitors, see the cockroach guide and the article on ground beetles.