@Patricia116 Our House Rules (which we "force" potential guests to review and agree to before we accept their booking) clearly states that the guest (or guests; we accept 1 or 2 guests) can have no more than 4 visitors at a time and that *all* visitors must depart by 10pm. Any violation of this house rule, or any other house rule, is grounds for eviction per AirBnB's terms.
AirBnB now also requires guests to check off that they agree with all House Rules.
Of course, our apartment is entirely separate from our own living area, so visitors aren't so invasive. If your AirBnB space is inside your own home, you should make the House Rules even more restrictive.