“Biting” mites are mostly nest parasites of birds, rodents, and other animals. However, they will bite humans when their normal hosts are not present. Mite bites cause little red bumps on the skin which can be extremely itchy and which may become infected when scratched.
Home dust mites on the other hand, do not actually “bite” or suck blood. They feed on organic matter, shed skin pollen, fungi, bacteria, and animal dander. People usually develop allergic reactions to the powerful digestive enzymes or proteins within the bodies of home dust mites. Unfortunately, these allergens also persist in their carcasses, feces, and shed skins. Besides itching, home dust mites also trigger asthma, especially in children.