ST. LOUIS COUNTY (KMOX) - After recording 19 pizza delivery driver robberies in St. Louis County in the last year and half, County Police met with local restaurant owners and managers behind closed doors today to talk about keeping their drivers safe.

While they don’t want to divulge all their tactics, Domino’s District Manager Nathan Cook says one basic tip is that drivers are never allowed to carry over 20 dollars in cash. He says they’re also not allowed to carry weapons, because 80 percent of the time, they’re outnumbered.

“They’re going to be overwhelmed and odds are that they’re going to have their weapon used against them,” Cook said.

Domino’s franchisee Mark Ratterman says one problem is the use of free cell phones which make it impossible to identify the caller.

“These cell phones are great but I think they need to register them for the safety of everybody,” he said.

Ratterman adds that customers, too, can aid in this venture. “We want to ask our customers to turn on the porch lights, open the door, watch us too and from the car.”

He tells his drivers that “the best delivery of the night is them going home safe” and that they shouldn’t risk going to any home they feel unsure about.

Zack Schwering used to deliver pizzas until a co-worker was shot to death a couple of weeks ago. He says he won’t go back to the streets.

“My mom would kill me,” he said, laughing. “I can’t do that.”