My guest sign a no smoking policy when they check in that states they know they will be charged $250.00 for deep cleaning of the unit if they smoke in the unit. The state forbids smoking in hotels/lodging facilities. I am a licensed Bed and Breakfast with the state- so it is against the law for them to smoke in my suites. We have only had to charge one person and the rest have abided by the rules. We been here for 15 years so I don't think that is a bad record. We do provide outside ashtrays with seating that they can use.