Change your front door lock right when you move in. Why aren't any of you doing this? The landlord/maintenance people have no right to be in your apt, and can only come in if you let them. I've had maintenance stop by and someone from the apt. handing out gifts. Both just tried to unlock the door, no knock no ring nothing. That shyt pisses me off. LOL.. I actually had them try this shyt couple days ago. After he was trying to open the door and standing there dumbfounded he rang the door bell. I told him I have finally gotten my daughter to nap and that I'd rather not risk her waking.
The smell will give you away.. 2 flowering plants will stink up a whole 2 bedroom apt. Until you grow, you honestly won't understand the strength of the odor. LOL.. even with 'odor devices'.
And Schlage locks are def. the way to go.