I agree, Mark26. We have our No Smoking inside or anywhere on the property listed in our House Rules. The House Rule also states they are not allowed to smoke in their vehicles if they are on the property.
We added the last part when guests would go sit in their cars to smoke and throw the cigarette butts on our driveway or in the garden!
We also state in the no-smoking policy that it includes all smoking items including marijuana; vapes, etc. Pot is legal here, and though we don't have anything against someone using it, we don't want the smells on, or in, the property.