Non Resident Has Keys

[Arnie Guida]

I'm at my 4plex and a non resident walks past me, pulls out some keys and opens the main entrance and then into an apartment. I was dumbfounded. I hesitated to do anything right away... The tenant is brand new on a one year lease... Standard State of Wisconsin Lease. My options? I want to be in the right before I say or do something I can't back up. Thank you, Arnie