Unless you're in possession or positive on urinalysis, it shouldn't affect you one bit.On that note, you should be very clear that there's no smoking (of any substance) allowed in the house.

I have NEVER done any illegal substance in my life.

By that logic we should congratulate heroin dealers since party goers are no longer confined to legal substances such as alcohol & marijuana.

Its now owned by Sharpie, but mean streaks are a wax substance that works more like a crayon rather than a marker.  

Liability becomes a greater concern when you add alcohol or other substances to the equation -- a common occurrence when dealing with short-term renters.The reality is that many short-term rental guests have never owned their own property and as such, there is a risk they may lack a sense of responsibility and respect for your vacation home.

In my opinion we have bad public policy in this country that leads to an over concentration of poor people in many urban areas, which then leads to high crime, substance abuse, poor schools, etc.  

To get technical, you will be going up against the Economic Substance Doctrine which states that a transaction has economic substance if: (1) the transaction changes in a meaningful way (apart from Federal income tax effects) the taxpayer’s economic position; and (2) the taxpayer has a substantial purpose (apart from Federal income tax effects) for entering into such transaction.By transferring your primary residence into a LLC, you would not be changing your economic position.

For this you'll need to engage a CPA or an EA to examine your facts, circumstances and goals.You seem determined to bypass the passive activity loss rules under Sec 469 by using "form" to overrule "substance". 

They can somehow afford the cable television that their uncle sits and watches all day, as well as whatever controlled substances that they are smoking in the basement each time I try to ring them with a contractor for an appointment, and they refuse entry, us having "caught them at a bad time".To put it simply, at their essence my tenants are not human.

I have worked with many toxic substances during my career, including mold and other biological substances.