Not trying to defend or defame, but, some of ya'll are going a little overboard about the cleanliness issue, IMHO.
This is a plant.
Being indoors isn't even it's natural state, let alone needing a 'clean room'.
Anyone here remember BOG's threads on old Overgrow? Lots won't, they were toddlers back then.
That guy grew, and bred, fire right underneath his house, pots right on the dirt, 5ft ceilings, rocks and shit everywhere.
Used to see old rootballs hanging around in the backgrounds of some photos if I remember correctly.