House crickets are nocturnal or active at night and usually hide in dark warm places during the day. Outside, they feed on plants and dead or live insects, including other crickets. Indoors, house crickets can feast on fabric, eating large areas, leaving holes and are especially attracted to clothes soiled with perspiration.
Clothing and carpets can become damaged when house crickets enter homes. They typically feed on the surface, leaving the area roughened from pulling the fibers loose while eating.
The most effective way to prevent cricket infestations is to reduce areas of moisture in and around your home. Mow the lawn, weed plant beds and move woodpiles away from the structure. Provide adequate ventilation in crawl spaces, basements, etc. In addition, change outdoor lighting to less-attractive yellow bulbs or sodium vapor lamps. It is also important to seal possible points of entry around the house including window and door frames.