As above some local laws vary.
Through necessity I've become an expert in New York State landlord/tenant law.
Thus if I have a delinquent tenant I can write up the paperwork,submit it to the proper court,pay the nominal filing fee and await the results.
It also helps if you know the court clerks and officers by name and schmooze with them and occasionally buy them lunch and drinks.
Making friends with the Suffolk County Sherrif's office personnell does not hurt either.