In an effort to avoid these types of issues Self-Storage Facilities should insure their leases are well written and are clear and unambiguous, especially on the issues of when rent is due and what happens if it is not paid on time.  It is also important that you review the Minnesota Self-Service Storage Act to make certain that your lease and your lien sale procedures are in compliance with statute.  This includes complying with the terms of the statute, minimum waiting periods, mailing of notices, language that must be included in the notice, etc., your liability to your tenant for wrongful sale is minimized or completely eliminated.