Elderly people who can't speak English are especially vulnerable, an advisor says.
The offenders also threatened the pair, and took their phones.
"He didn't even lose his hat - not his first rodeo."
On Saturday evening, he entered a Ruakaka petrol station with a gun.
A spring clean is just one of many ways to deter robbers, they say.
The five also attempted to rob a dairy with a knife, police say.
The trio managed to get away with bottles of spirits.
The men were armed with a baseball bat and hammer.
They've nabbed the alleged mastermind behind the west Auckland robberies.
He attacked a shopkeeper and made off with an armful of cigarettes.
A man held up the bank on Sunday afternoon, and no one saw a thing.
The video shows a woman and young child fighting off a moped gang.
A witness says they were holding a bloody knife.
A male and female took off with cash, cigarettes and pouches of tobacco.
A police dog tracked him to a nearby street in Hamilton, but he wasn't found.
Three men took off with cigarettes and cash from the Christchurch store.
Katia da Silva Sastre was, unfortunately for the gunman, a military cop.
They are believed to be responsible for a number of aggravated robberies.