What's the proper procedure here in Florida?

We don't know your procedures there, it sounds like you have a Lien, that you would have to foreclose on/go to court, in order to receive actual title (deed)?  

The procedure involves some paperwork and a certified letter to the last known address of the owner of the home in question.

Not suitable for massage parlor, tattoo artists, or band recording studio. 

Any attempt to make a mechanical procedure that is one-size-fits-all would be an exercise in futility.

Please do NOT rely on suggestions from this blog ... that is if you want to be sure you are following all federal and local laws and procedures and that your investments/money are secure.Hiring a lawyer may be much cheaper than the alternative.

A foreclosure procedure would almost certainly require notification of the underlying lender, and they may choose to start their own foreclosure, even if you're making the payments to them.

I've seen good tenants start out really great and then six months or a year later just totally flake out.Whether you blame it on global warming, drinking the local water or mental illness it's just part of the biz and you follow procedure.

If they insist that you do, it's a violation of RESPA (Real Estate Settlement Procedures Act) and us called "steering".  

Ask about what their processes are to react to maintenance, rent collections, tenant inquiries, applications, leasing, etc.....If you don't agree with or are uncomfortable with their processes and procedures, keep interviewing.