The agency has seized an estimated 27 kilos of methamphetamine, worth more than 10-million-dollars.
In one attempt, two men in their 30s arrived from Canada on New Years Day, and meth was found in a checked in suitcase.
In the second, unrelated, case a 59-year-old woman arriving from Hawaii, was questioned by Customs.
They found stiff clothing and testing revealed methamphetamine had been soaked into the clothing.
The incidents don't appear to be related.