I have been having some rust problems on tools in my shop. I've tried the waxing, oiling, cabinet with light bulb, etc. Things have improved some. I'm in the Pacific Northwest and our winters tend to be a little wet. So, I bought a dehumidifier for my 1000sq ft shop (70Pint, 38F rated Whirlpool). I plugged it in last night and found a full bucket of water in it this morning. Wow! Anyway, I had no idea how much water was in the air out there. It's still chugging along, having not reached the "medium humidity" set-point yet (the manual was not clear on %humid. that is). I may have to put in a drain hose. Anyway, I thought I'd just share my experience so far.