e said one of the myths involves using salt to clean or purge crawfish before boiling. “Research at the LSU AgCenter has shown that the addition of salt to the wash water provides no significant advantage in cleansing crawfish despite the numerous claims to the contrary.”
Washing crawfish for as little as 10 minutes in water helps remove mud and debris but does little to eliminate intestinal wastes, he said, and salt appears to be of no benefit.
“The only way to significantly reduce size and content of the intestinal tract is with a 12- to 24-hour freshwater purge, which is difficult and impractical for homeowners to do.”