The term MITE OR CHIGGER is an ACARID, which is a type of arachnid. Acarids are small, eight-legged creatures that feed on the blood of animals and humans. They can cause skin irritation and allergic reactions in some people. Mites and chiggers are two of the most common types of acarids. Mites are usually found in soil, while chiggers are found in grass and other vegetation. Both mites and chiggers can be difficult to detect due to their small size.