Dupla laterite problem

Yesterday I visited the only store I knew of that carried Dupla laterite.
But when I asked the salesperson where it was he told be that it had been
pulled off the shelves because it is now illegal.  Can anyone tell me the
true legal status of Dupla's laterite and point me in the direction of the
documentation regarding it.  As far as I know it isn't illegal but then
what caused this store's manager to think it was?

Anyway, now I am out of a source of laterite.  So, could someone please
send me (or post) the name and address of a mail order place that I could
get it from...

Thanks a bunch,
Cindy (Cynthia.T.Cua.2 at nd_edu) in frigid South Bend, IN