Thankfully the government has provided more bureauCrazy for us to navigate without any clear definitive rules (see the new DOL Fiduciary rules for broker dealers as more examples of big government getting involved in business they don't understand). 

If a drug dealer tenant locks a dog in the kitchen 24/7 and the dog freaks out because she's trapped and alone and tries to claw her way out, what you have is a human problem, not a dog problem. 

Have the police test it (the area if tenants removed it by now)file a reportask about witness protection (who knows what dealers are capable of!)

Essentially Comcast and these other guys have adopted the same pricing structure as car dealers.  

Most tenants will simply understand bad things will happen if they break a lease and not try it in the first place.Another thing to consider is that drug dealers and prostitutes look for month to month rentals.

The drug dealers may not be smart but when it comes to the law, what you can or can't do, they are geniuses.

The tenant was a drug dealer.  

I mean, a drug dealer will always have enough money to pay the rent...and if he can't surely all of the visitors he'll have will convince him to do the right thing, even if they are all parking on the street and the neighbors are calling the cops...."

Having all of my application material online helps weed out the Luddites, drug dealers, conspiracy theorists, and other "cash only" type mentalities. 

I have a budget spreadsheet that I update each year based on previous year averages, and every year different issues pop up that cause me to spend my profits making the expenses instead.The first year I was the landlord at 22 and people didn't take me seriously, so I got taken advantage of by listening to every non paying tenant issue (flat tires, grandmas sick, have to water the dog, etc. ) The second year I had a property manager who was both stealing from me and renting to drug dealers.