I agree completely, AirBNB does not screen their guests at all and they dont have a clue who's travelling with them and they don't bother to ask. In my case, I live in a studio attached to the back of the house (no common entrances) and I have 7 security cameras around the perimiter of the property but once they close the doors I really don't know what's going on inside, granted at this point I'm definitely paying closer attention but at the same I'm trying to respect the guests privacy because it's really 5% of the bookings that are causing major problems and probably another 10-15% that are just disgustingly messy, but the other 80% are generally very nice people. The age of the people that have destroyed the house were all early 20's, although I have to be honest, I'm not convinced some of these people even are old enough to drive. One thing to poetentially look out for is young guests from places that arent very far away and according to the sheriffs the one nighters are by in large the ones that cause the most problems for everybody. Part of the problem (and I really don't know what the solution is) is that in the few instances when I did contact airbnb while the mayhem was going on they didn't do much and really I guess they couldn't, an email and a text message from airbnb is not stopping a 30 person rager. I also AirBNB one of my parents places out when they are travelling and for some reason (thankfully) they have had no issues whatsoever, they're house is in Monterey, CA whereas I am up the coast in Santa Cruz, CA. Initially the only major difference in the booking policies between the two houses was the security deposit so I was convinced that would solve the propblem but it didn't, the house was trashed within a few weeks of adding it. At this point i think certain areas just attract people that want to rage, Santa Cruz attracts a different crowd than Monterery and Carmel, that's the theory I'm working off of now. Also, I am somewhat relieved to read that other people are having issues with people crapping all over the property, it is disgusting but also just the weirdest thing ever, it's not like an infant pooped on the floor or even a super old person not making it to the bathroom, its a bunch of normal looking (ish) adults and somehow they end up **bleep**ting on the couch or the walls or wherever, I even built and plumbed in an extra toilet in a little closed deal outside and it still happened again. I party a lot and i have never once in my life seen somebody just **bleep** on a bed.