If the issue comes up after the lease has been signed without such a clause, the landlord would likely need to rely on an anti-drug or crime policy that hopefully was included in the lease.The landlord would then need to send written notice of the lease breach, citing the appropriate clause.

Make sure you have all your leasing forms and documents ready, holding security deposit , crime free/ drug free addendum, pet addendum if applicable, and the lead addendum (federal requirement), utility start authorization, move in check sheet, to mention the main ones. 

It started with all the heavy drug use after the explosion of Crack in Tampa.

Additional Thought:When you take possession do a Crime Free/ Drug Free Addendum for all tenants signed and returned in 3 days.Give bad tenant the 30 day notice to vacate.If you notice activity of drug smoke smell anytime in the 30 day notice to vacate period , give him a lease violation notice, that you will file for cause unless  he agrees to vacate within 7 days.

Your city may require you to attend a Crime Free/Drug Free class to be certified, this is a good class and get set up and take it, call your police department where the property is located and find out more.Apartment buildings are sold everyday, Some with 100's of current tenants with leases that are transferred so your not assuming something that other landlords haven't done and will continue to do.

My smokers above had been really good tenants until drugs entered the picture, so some things are out of your control.

Do you ask the car dealer how much is for the engine, how much are the seats, and so on?

We talk about drug use on the premises during lease/property rules signing. 

There are pockets of homes that do not fit this mold, but overall, these communities North of town have been hit hard by meth and other drugs and the crime that comes along with them. 

The industry of home repair battles with high incidence of drug use and abuse.