Do you charge first & last months rent up front?

[Eric Payne]

Hey guys, I'm new to bigger pockets, but not to real estate. Thus far I have had pretty decent tenants, but this is the third time in the past year that I'm getting screwed by someone skipping out on the last month and just ignoring me when I try to get a hold of them. The problem is that 50% of his stuff is still there and so I cant just take it over. If I charged the last months rent up front, most of my units would be over 2 grand to move into...and I'd be eliminating probably 50%-70% of the rental market. Any suggestions or thoughts? Thanks!