@G-C-R-M0 I'm sorry, I failed to notice you said that you just don't allow smoking anywhere on the premises. I got thrown off by you saying that you really don't care if they smoke as long as they don't damage the property.
I'm not familiar with California, but as a Canadian it's much the same- no smoking at all in public places, restaurants or bars, but marijuana is in fact legal, although you can't necessarily smoke it everywhere, either.
I've just read so many posts over time here about hosts' issues with people smoking at a non-smoking listing, that my advice is always that smokers will sometimes book non-smoking properties, even if they shouldn't, so it can save a lot of hassle to provide a comfortable outdoor area where people can smoke or vape. Seems to me like a more practical approach than having to boot out someone you caught smoking, having to spend days cleaning ad airing the place out, or pick up butts stamped onto the ground because there wasn't anything to use as a ashtray.
In places like Canada, it's so frowned upon to smoke cigarettes now, that even hard-core smokers are accustommed to having to smoke outside and the majority will be respectful of not doing it indoors.