tenant is smoking marijuana in my property

[Aaron K.]

I have smelled it on multiple occasions, and I have another witness who has smelled it. I have had other problems with these tenants and it may be time for me to find new ones. Of course, I want as little trouble as possible. What is the smoothest course of action? In the unlikely event that they sue me, how would this play out in court considering I have no evidence other than my word?