Your not even kidding. Even if you take a tenant to court and win it will still end up costing you time and sometimes you can’t rent out the apartment immediately afterward. And there is not a lot you can do to prevent issues beyond screening well and trying to make the best judgement call. I’ve had tenants with great credit, no evictions or criminal record still not pay rent because they lost their job or have some sort of crisis. The site I use http://www.tenantverification.com/ has helped me avoid some real problem tenants but short of being physic you are going to end up with problems at some point.