If they don't comply you are better off evicting them.I would not confront them in person without police present.

Confrontation with the other investor may not be the best use of your time.

I later confronted him and he came prepared for all of my questions, telling me that I can't prove he smoked. 

That answer will give you a clear path forward for almost all issues that have to be confronted when owning and managing rentals IMHO.

Now you better the 100% sure before you confront a tenant and would advise consulting a local attorney if you think this is the case.

Be aware that most of the sellers on the Internet are crooks who know that emotion and fear make many sales and they are too far away to be confronted and are strangers. 

I think also my PM is trying to dodge the issue, but I will be confronting them on these issues else look for someone else.

Hi All, We have been self managing for over 20 years in SFH's, mostly in FL  and have been confronted with a number of tenant applicants who have assistance or therapy animals recently.

This needs to be just short of confrontational.

This set of tenants completely shocked us (trying to hide things they broke, then actually going as far as stating they left the home in better condition than when they moved in, the father had a verbal confrontation with a female neighbor, they were not paying for trash for over a year and were stuffing the neighbor's bins with their own trash, leaving piles on side yard behind gate, etc.).