Bed bugs are small, reddish-brown insects that feed on the blood of humans and animals. They are about the size of an apple seed and are most active at night. Bed bugs typically hide in cracks and crevices, especially in and around mattresses, bed frames, and other furniture. These pests can be found in homes, hotels, and public places, making them a common nuisance. While they do not transmit diseases, their bites can cause itching and discomfort. Effective treatment often involves thorough cleaning, vacuuming, and sometimes professional pest control services to eliminate infestations.