The answer to 'what causes cricket' is that crickets are a type of insect that naturally live outdoors. Crickets are attracted to warm, dark, and moist environments and often make their way into homes through cracks and crevices. They are primarily attracted to sources of food, such as crumbs or pet food, as well as moisture from leaks or spills.
Crickets can be a nuisance because of their loud chirping, which is typically louder at night. While they do not pose any serious health risks, they can contaminate food sources and damage fabrics or other materials in the home.