What to do with homeless

[Di F.]

Hi all - A group of 3 homeless now use the back deck and the entry way to the basement of my rental property as their spot.  The tenants do not live in the property all the time so they cannot really know.  The tenants called the police before and the police kicked them out.  They just called the police again and are waiting for the police to arrive.  We are going to install fence to block the entry from the stairs to the deck and the basement.  But even that they can climb and jump over to the deck if they want to.  The contractor is backed up (also looking for recommendation if anyone has one can do a sooner job).  Any other suggestions?  I am out of idea. . .