What's the name of the paper in the ashtray of a five-star hotel? To prevent ash from flying out, there seems to be a saying that smoking is harmful to health. I want to ask about this paper.

It should be called ashtray pad paper, which is found in ashtrays in some big hotels. When using, pour some water in it, mainly to prevent the spread of soot, put out cigarette butts and clean the ashtray. As you said, the paper with words should be customized by the manufacturer with the name of the hotel on it.