Have a couple, but none in this particular room. Running those things 24/7 is not a solution - even in the metal shop, I have it on a timer that only kicks on for two 2-hour periods of the day.
One of the reasons for building an enclosure was to address this, and it works to an extent. I have reusale dessicant packs in the enclosure and that keeps it to about 50% when the door is open. I picked up a cheap mini-dehumidifier that actually fits into the enclosure and I may use that on particularly bad days.
And yes, I measured the filament at 1.73-1.74mm in the airtight box, going into the Thorsden drier, and going into the print head. Then 1.79 inside the print head, which was sufficient to cause extrusion to fail. Or at least I think it was - I have since had other, less frequent extrusion problems and have been dealing with those as they arise. The humidity might have just compounded an existing extrusion problem.
Picked up a cheap food dehyrdator for $20 and that thing is awesome. Cut the shelves out of all but one level, glued the now-shelfless rings together (and the shelves together, along the wannabe spindle), and can now do one spool plus a bunch of dessicant packs on the remaining shelf. Saw the printdry but figured I’d rather spend the money on an inline drier.