@Rod44 I don't think Airbnb does any kind of check on guests, even though they claim they do. We can't rely on Airbnb for that. There have been reports on this forum from hosts who found out that their terrible guests had warrants out for their arrest. That said, I don't think it's particularly likely, as the majority of the population aren't criminals.
Same as Laylee, I've accepted many guests with no reviews, and communication is key- the tone and content of their messages. All have turned out to be lovely guests. If they don't send an informative initial message accompanying their Request (I don't use IB), I'll ask a few questions and make sure they've thoroughly read the listing description.
However, unlike Laylee, I don't have a big list of rules or feel I need to warn them beforehand about not taking over shared spaces, washing their dirty dishes, etc, partly because I only host one guest at a time and partly because I've been lucky enough to get respectful guests who don't do things like that.
If I had a first-timer who seemed clueless, I'd have no problem asking them to do things differently when in my home if need be.