The answer to 'are cricket dangerous' is no, crickets are generally not considered dangerous to humans. Crickets are small, harmless insects that do not pose any significant threat to people. While they may be startling to find in your home, they do not bite, sting, or carry diseases that can harm humans.
Crickets are typically more of a nuisance pest than a dangerous one. They can make loud chirping noises, especially at night, which may be disruptive. They may also chew on fabrics, paper, or other household materials, but they do not cause structural damage to homes. Overall, while crickets can be an unwelcome guest, they are not a serious pest that homeowners need to worry about from a safety perspective.