PGR's & Avocado - whats all the fuss about residue with fruits?

The USDA have legislation stating the fruits that have detectable levels of PBZ above .005 PPM will not be allowed in to the USA. It does NOT state that trees treated with PBZ cannot enter the USA. With the application of AuStar during recommended times there is sufficient time for any residue to degrade hence ensuring detectable limits of PBZ on the fruit are well within the limits.