1) Had a family stay (with an infant!!!) in one of my apartments which left the apartment messier than no one had before - threw around all the mattresses, caused a fire alarm, broke the crib which I specially bought for them, broke the stove, and trashed the bathroom mirror.
2) husband got " " wasted" turned the water off outside. Then he let his 3 dogs use our deck for a bathroom! Ripped our toilet paper holder off the wall, broke into our owner's closet, threw it at our Mac & at a priceless stain glass window shattering both. Lost his keys so they couldn't leave! Wife called us & told us the house wasn't safe w/o water because they couldn't flush the toilets. I called the police. Police go & bring the town utilities guy. They figure out the water is off & he admits to turning it off. Then over our camera I tell husband to clean his dogs' crap up! He tells me to fuck off as he hits the camera!
Advice: you can claim additional cleaning fee via Airbnb. This is not an ordinary mess. Make sure you collect as much evidence as you can. You will have to provide it to Airbnb support.