The regulation affects all egg producers with more than 3,000 laying hens that do not supply their eggs directly to the public.
Those producers with more than 50,000 laying hens are required to be in compliance with the new rules by July 2010, while those with 3,000 to 50,000 laying hens will have until July 2012.
The FDA said that approximately 30 deaths are caused each year by consumption of eggs tainted with salmonella enteritidis.
The guidance can be found online here .