1) If a home is on a foundation, is there a way to access floor-based
forced-heating/cooling? I'm amazed by the feces, cigarette butts,
mold, dust, cooking grease, pet hair I find when I visit these senior
citizens and shut-ins with respiratory problems, but none seem to ever
consider that their home is making them ill. Yesterday, I counted an
eight-vent floor in an extremely tiny home. If cleaning this style of
duct is impossible--I don't mean blowing them with a Shop Vac, I mean
cleaning the mold out--is there a way to calculate total tear-out and
replacement?

2) Why do mobile home owner/landlords restain woodwork or panelling so
often? I thought it might be some kind of anti-termite measure, but
twice in the dead of winter (Pennsylvania), I've been in newly-
restained homes that made me ill. It was like breathing pure
turpentine. Termites can't be that active in sub-zero temperatures,
right?

Thanks.