[dmix]

A lot of full-on junkies will essentially trade their public housing apartments to dealers who use it as as safe spot to deal out crack/heroin. The dealers don't operate our of their own house for safety so they hire junkies and use their places as distribution centers in exchange for 'free' drugs, while still letting them sleep in their bedrooms.

Then the apartments eventually turn into crack dens. Eventually the door gets kicked in by police and the dealers find another person willing to exchange free drugs to let them use their place. Plus the junkies going in/out of jail and their apartment gets used when they aren't there.

This sort of thing puts a ton of pressure on the normal families trying to live in those apartment buildings. A small group can definitely ruin entire floors of those apartments.