Pre legalisation, certain black market growers would get a mansion in a tony neighborhood and grow 1000 plants with stolen electricity. After a bust the news always pointed out humidity damage.
Now people think that having 4 weed plants will produce enough humidity to destroy a building.
My grow area needs to be humidified.
We're talking "up to" 4 houseplants (who's counting, really?) and typicaly less than 600w.