Upon return of the property, it was clear they had been heavily smoking pot inside. 

@Drey Taylor We had a tenant fall asleep with a pot of grease on the stove in one of our properties, and burned the entire kitchen down along with causing significant smoke damage to the rest of the property.

This tenant has ignored my warnings - to stop smoking in the unit (multiple times), having unauthorized guests in the unit without my permission, have spread rumors and lies about me throughout the neighborhood, and have ignored my texts (only method of communication).  

@Danny Van you can also attend Oakland REIA and MREI, both held monthly in Troy.Regarding what to do, first you'll need to call the City and get their rental application to fill out, pay the fee, submit and schedule the inspection.It's mostly a health & safety inspection: smoke detectors, a CO detector near furnace, handrails, GFCI's. etc.WARNING: Warren doesn't really like landlords, so they can be picky about previous work done without permits - even if it was done before you bought the property!

For example, even if there is only smoke damage, structural components may need to be replaced. 

So I check the plumbing that we replaced, I look under sink, I check smoke detectors, also look at spot I repaired under a bad window seal,  heck doors for light leaks.

I grew up in East rutherford and lived in smoke rise for about a year.. 

Tenant agrees to comply with all duties required by Wyoming Statute §1-21-1204: maintain the Premises in clean and safe condition and not unreasonably burden any common area; dispose of all garbage and other waste; maintain all plumbing fixtures in a condition as sanitary as the fixtures permit; use all electrical, plumbing, sanitary, heating, and other facilities and appliances in a reasonable manner; prevent water pipes from freezing by turning off outside spigots, disconnecting hoses, and keeping the rental heated to at least 50 degrees; replace lightbulbs, air filters, water filters, and other consumables as needed; test smoke detectors every six months and replace batteries as needed; immediately notify Agent in writing of any defects or dangerous conditions Tenant becomes aware of; replace broken or cracked glass, no matter the circumstance of breakage, unless the Tenant provides Agent with a police report detailing breakage beyond the control of Tenant; pay to repair anything damaged by the Tenant, his guests or invitees, whether through intentional act or negligence; upon termination, remove all personal property and garbage either owned or placed on the Premises by Tenant and clean the Premises to the condition at the beginning of the AgreementCreate a policy and stick to it.

I didn't want smokers but wasn't sure if it was legal to put "No smoking" in my leases.

Beware of partial / late payments, of pets or smoking / vaping in units that don't allow them, etc.