Um...

Keep in mind that when you start growing, you get accustomed to the smell. Your going to need to febreeze, lysol, and Mr. Clean the HELL out of your house before they show up. Especially if its a state cop, or one trying to create a career. Because, yes, they WILL do it at the expense of extended family.

Pay attention to the paint on the drywall, the odor is absorbed through the porous paint easily. Use carpet fresh as well.

I'm paranoid as HELL and I don't even let my friends come to my place - Damn sure wouldn't let my sister bring a cop.