How many neutral letters are you sending?

Fireworks lit up the Strip from nine hotels, with over 400,000 attendees celebrating peacefully.

I'm thinking I can just write a simple letter giving notice that the lease will end at the end of 12 months letter style without citing any specific reasons. 

Type up a DEMAND LETTER (some people call it a NOTICE TO EVICT).  

Quote from @Jeff Calcaterra: We have a potential tenant new to the area who has gone through a paid background check, signed a background check authorization form, sent us a LinkedIn profile, sent an offer letter and says he is willing to send us paycheck stubs, but says he doesn't want us to call HR to verify employment because he is supposed to have found housing already.

It likely is out of date as to cost as this info is quite old (my guess is 5 years but it could be longer):- Rent Recovery Service: offers flat fee service starting at $20. 3 letters start at $30.

I would immediately send a certified letter to get rid of the cats and state the damage that is already done.

However, when I requested our EIN the letter stated, "Based on the information received from you or your representative, you must file the following forms by the dates shown.

The offering statementhas been on file for more than nine months and has not yet been qualified.

Located after a letter writing campaign and purchased directly from the seller without a real estate agent.