Or, put a sign on the entrance:
"No minors, pets or ANTISMOKERS allowed
Tresspassers will be prosecuted."
But, they'd be busted for discrimination. Only smokers can be legally discriminated against, don 'cha know?
Yes, I am aware of that. I live in the Socialist Peoples Democratic Republic of California. This is the state that like Ma. elects communist traitors (tom hayden) of office.