@Stuart177 Message to guest: "Hi XX, when you book an Airbnb, you are entering into a contract with the host. The host must provide what they state they provide in their listing information and the guest must respect the property and follow the stated house rules. Failure to comply with house rules and to show respect for the host or the property by making a mess, staining furniture and carpets, helping yourself to the host's supplies, etc. will result in termination of your booking and payment for damages or extensive cleaning."
Don't leave extra towels, creamers, or any other amenities within access of a guest beyond what you feel is reasonable for the number of guests and the length of stay. Tell them when their towels will be changed out and that they don't get fresh ones just because they threw the ones you gave them in a wet wad on the floor.
Make your expectations re clean-up, and pre-check-out tasks specifically clear. What the guest considers to be tidying up may be quite far from yours.
And please don't let guests get away with bad behavior simply because you are afraid of a bad review. If you do this, they just continue this behavior at other host's homes. Leave honest reviews to warn other hosts of bad guests. You can write it in code which other hosts will "get", if you don't want to be specific (altho other hosts do prefer to know what the issues were,- not in excruciating detail, but in general terms)- "Guest stayed 2 nights" tells me that you had nothing good to say about the guest.
You have to judge for yourself, in each individual case, if it's worth confronting the guest or charging them for damages. If a guest is smoking in a non-smoking place, meaning you or your next guests will be disgusted by the smell, or even cancel, that's a serious violation and worth pursuing. If they ruin an entire set of sheets, that's likely worth charging them for, if they just stain one pillowcase, or leave a spot on the carpet you find you can remove with the right product, I'd let it go. Set aside a fund, a few bucks from each night's fee, to cover general wear and tear and replacing inexpensive items.
Some guests are just slobs, some are clean, it sort of balances out in my experience. And is part of the hosting reality.
And yes, sometimes it's a matter of the guest just being young and/or clueless and in some of those cases, it is better just to educate them on expectations if they seem like someone who will apologize, take it to heart and change their ways.