Squatters is the term we use to describe the people who illegally move in to vacant homes. Since foreclosures in Florida can take 2 years or longer to complete, we have many vacant homes here in South Florida. While I have the upmost empathy for the homeless, many of these individuals bring crime with them. They are indigent and may be robbing nearby  homes to pay for food and drugs. This may sound harsh but it is happening all over. Contact the Association President if you have one and the local police so that they can keep an eye on them. They will try to track down the owner and get permission to run the people off. If the owner cannot be contacted, you as a neighbor in the community, can call Florida Power and Light (FPL) to tell them that the individuals are stealing the electricity and the power company will come out and remove the meter. This will keep people out for a couple of months and then another group moves in and illegally connects a meter and the cycle continues. Call FPL as often as you have to and keep your neighborhood safe!