Being the hands-on, always teaching kind of gal, if I had a tenant complain of mold, Iíd go over and go through the house WITH them showing them all the things they can do to eliminate/ prevent mold. I too supply dehumidifiers, and over the years have found them turned off, or relocated. And then, the drain hose stops draining. Ugh! That one happens a lot. Sometimes I can get it sorted, sometimes not.
Then, Iíd say, Iíll check back in a couple of weeks, see how itís going. Chances are, they wonít have done much. But, when I check back, Iíd positively comment ( in a small way-adults donít often want more than a simple, oh, good, yes, thatís helping.) And repeat, gently, some of the remedies for mold. If they were seriously encouraging mold, perhaps wet clothes piled on bathroom floor or basement floor, Iíd be stern.
Mold happens. If itís a leaky roof, leaky plumbing, then landlord needs to repair and clean up. If itís housekeeping habits, then tenant needs to clean up. Here in Wisconsin, I sometimes have to wash mold off of the outside of the house, so that tells you, itís a moldy place out there. Mother Nature. --70.92.xxx.xxx