Security Deposit dilemma for 30 day stay with Furnished Finders

[Michelle L.]

I've listened to multiple podcasts and was inspired to move to mid term rentals on my 2 Airbnb properties in Hilton Head. I have some interested parties but I'm stuck on how much to charge for a deposit for a 30 day stay. Do I go with a $250 refundable deposit or do I charge a full months rent of $1800? This seems excessive for a 1 month stay but if they turn into nightmare guests it might be needed. I am doing background checks thru Furnished Finders KeyCheck and using Bigger Pocket Pro Tools for the lease but I'm stumped on how much to charge for a  security deposit on Mid Term Rentals. Any advice?