Common pests  refers to organisms, usually insects or small animals, that are considered undesirable or harmful due to their potential to cause damage, transmit diseases, or create nuisances in various environments. These pests often interfere with human activities, agriculture, and the well-being of plants, animals, and humans. Common pests can include insects, rodents, and other organisms that invade, infest, or negatively impact living spaces, crops, and ecosystems.