Deer can be pushed into suburban spaces by hunters and hunger. A low single strand fence and a taller (6' or taller) obvious fence run four feet inside the low fence makes a trapping zone to deer that they do not like to become entangled in.
The real fix however is what ever your state (DNR, Fish and Game, etc) will permit for hunting in your suburban area. CT has a program that will allow bow hunters in pretty settled areas. You don't have to do the hunting, just permit others to.
