I got good feedback on here about these Eva-Dry dehumidifiers, and stocked up with a few when I found them at Costco. I bought them for stored vehicles, and have liked them so far...... pellets change colour when "watered-up". What they don't communicate well on their site is that they have a built in heater to dry them out - flip out the rear AC plug and plug it in overnight. Pellets change back to "dry" colour when heated long enough...... only trick is to
not leave them plugged in more than about 14 hours. If I only get something like 10 hours plugged in overnight, and a few pellets aren't quite "cooked", then I'll do another 2 or 3 hours the next night.
The E-333 Renewable Mini Dehumidifier | Eva-Dry
For a smaller gen in a high-humid environment, I'd try and find a thick plastic bag (how big do they make Zip-Locs ?

), and toss something like an Eva-Dry in with it and seal it up. Lots of other options; some people just cycle through dry rice. So long as it isn't tasty rice, the bag might even help to keep mice out of the gen !
Should be simpler than it is :confused3: ..... to keep stuff reliable.
Rgds, D.