Although the pesticide TDX has been widely used by fruit growers since the early 1960' s, a regulation in force since 1960 has prohibited sale of fruit on which any TDX residue can be detected  That regulation is about to be replaced by one that allows sale of fruit on which trace amounts of TDX residue are detected
In fact, however, the change will not allow more TDX on fruit than was allowed in the 1960' s, because
at least a small fraction of the fruit sold each year since the early 1960's has had on it greater levels of TDX than the regulation allows