Hello George & All,
"Miticur,a white plastic strip impregnated with Amitraz, was touted as a
effective control  for the tracheal mites by the manufacurer in 1992-93 ,but
studies by the USDA showed little or no value"(Bill Wilson 1993).
George is incorrect in saying thousands of colonies died. The number was
around 150 and were in Florida. They belonged to a close friend of mine.
Miticur was pulled in 1993 mostly because the strips DID  NOT control
tracheal mites as advertised.
Bob