last i heard (2 years ago) there were only 2 dogs in the world that had been trained to sniff out mdma. they both worked at the customs house at JFK. it was a pilot program to test their effectiveness. i never did hear if they were proven usefull.
i used to cross from windsor/detroit all the time. where will you be crossing? or are you mailing?
email me if you have any questions.
good luck!