How do you rid the lawn of crayfish?

Boat and equipment sanitation, intensive trapping, and natural enemies (such as bass and sunfish) are ways to rid the water of rusty crayfish. The invertebrate in question (Orconectes rustics) needs its occurrence reported to the local natural resource management agency since no chemical is target-specific to rusty crayfish -- identifiable by black-banded claw tips and rust-spotted backs -- and therefore will affect native non-aggressive, non-invasive species. Preventative measures range from cleaning boats and equipment of aquatic animals, mud, and plants; disposing of unwanted bait; rinsing boats and equipment in high-pressure or hot-tap water; and spacing use of boats and equipment by a five-day drying out period.