I found the FL law:http://www.leg.state.fl.us/statutes/index.cfm?

Of course, you can check with the actual statutes under real estate, landlord tenant law - but who has time to decipher those!

I'm WI there is no statute regarding carpet age,

If the statute is 30 days notice and you give 60 you are being generous. 

The author of the article "guesses" that the intention of the statute is to require the landlord to set up a separate trust for each tenant, but this is not the type of thing one should have to guess about.

So it sounds like the best answer for *me* is to write a dual letter of notice of non-renewal (with wording to allow for default to month-to-month, which is what happens in Washington, from what I am reading in the statutes) along with a 3-month notice to increase rent.That will give them the 90-days required notice on rent increase & hopefully stop any potential sudden "complaints" that would bar me from non-renewing the lease (Washington statutes seem to say if there is an open "complaint" about a rental, you can't evict or non-renew or it's considered retaliation).You know, the more I write, the more I just want to get her out, sell, and buy 3 or 4 cheap properties......I love real estate and rentals, but when it's your OWN home.....ugh.

CT has all their statutes online.

And unless the statute portion you quoted is taken out of context, it looks like you can sue for lost rent.  

The state statutes should be online for you to read.

Legally, you probably only need to keep them as long as the statute of limitations to sue you is over.