Chicken mites are distributed worldwide. In many countries, Dermanyssus gallinae poses a threat to birds used for meat and egg production. They are found in many areas including Europe, Japan, China, and the United States. In the United States, Dermanyssus gallinae is rarely found in caged-layer operations and is more commonly found in breeder farms (Ruff 1999). Although Dermanyssus gallinae affects birds in many regions, it is most prevalent in European countries