@Cheri33
Hi - first thing is you really have no house rules. Think about incuding things like: no parties, no guests allowed on the property other than those registered with the host, put in quiet hours are from 11pm to 7am (or similar)
Get rid of the mention of lock box as it shouts out that you are not around. Once you are happy with the booking then a couple of weeks before hand you can tell them how to get into the property.
Not sure how far away you live, but if it's within easy reach then try be there when guests are checking in - or mention in the property description that you live and work locally and are there to help.
Other than that you can use settings (if you use IB) to say only those recommended by other hosts, etc.
So really it's about the message you send out in you description - right now it's friendly but a bit open to being used/abused' - you can tighten this up professionally and politely and hopefully by doing so weed out the bad apples.
If you have a person's name then you can do a search on Facebook, LinkedIn, etc - surprising what you can find!
Good luck