Four-legged crime fighters are the latest recruits to stop drugs, illicit items and cash from being smuggled into the country.
New detector dog teams have completed their three-month training programme and begin working at the border from tomorrow.
Customs Minister Nicky Wagner said the four Labradors, Casey, Flo, Latte and Que and their handlers were put through their paces during training using tasks and exercises that simulate the airport and cargo operational environments.
Three teams would be based in Auckland and one in Christchurch.