Naturally occurring parasitoids have been suggested to be used to manage the apple maggot. The term "railroad worm" is also sometimes applied to the apple maggot. The program consists of an Apple Maggot Quarantine Area, which establishes a pest-free area. The bacterial species Pseudomonas melophthora, can be found in the apple maggot, "Rhagoletis pomonella". The agency also deploys apple maggot traps to a selection of sites in the state. The apple maggot has spread to the Northwest, including Washington, Oregon, and northern California.