I'll believe it when I see it.In short, and this is not legal advice, just an observation from experience.

Don't ask me how I know but the best way to show the tenant what the problem is, is to remove the toilet, take it out into the yard, and proceed to bust it up with a sledge hammer while they observe (wearing safety glasses of course). 

When touring the property, use your scoping skills to observe how well the current owner has maintained the property and how well the tenants take care of their units.

Observe how the person interacts with their dog.

There's only so many times you can scream from the rooftops about good financial habits, and investing from a position of strength.

That's neither right nor wrong, just an observation that not everyone has the same debt structure as you. 

Make it clear, section X of the lease states...I have observed XX on this date. 

To David's point, I observed the same phenomenon in Rochester at about the time I started liquidating my investments. 

My personal observations.

Yeah, I'm going to call out people who have poor power of observation and can't figure out that as most others have noted, this isn't normal wear and tear.