A surge of outreach teams set to be deployed by New York City to deal with its persistent street homelessness problem has a simple goal: Talk to as many homeless people as possible, as often as possible.

That increased frequency of contact, many experts believe, could help persuade the homeless, even those who have lived on the street for years, to finally go to a shelter.

The number of staffers doing the outreach will double to more than 300 by March.

They will flood an eight-mile stretch of Manhattan, checking each block daily to try to make contact with the estimated 3,000-4,000 people living on the streets of the nation's largest city.

The tactic has had mixed results in other U.S. cities.