Thanks for you replies. This got the worst last year when our power was off for three days after hurricane sandy. I can turn the fans on manually, but it doesn't clear it. The heat fans maybe could, but I can't turn that on manually. They come on when it gets colder out and that won't be for a while. It may well be a dry pack that's done in there and any fan is just circulating that moist air now. I see the bottom portion can be removed to get to the boards. Perhaps there's a dry pack in there I can replace. But the face itself looks like it doesn't come off and I would really like to clean the inside part that's over the lens itself. Perhaps even clean the lens while I'm at it. I really think the fog rings are residue at this point that needs to actually be wiped clean. It's interesting because it states that a number of different camera modules can work in this dome, suggesting you can swap out the camera itself for something else, or if the camera dies. But the dome itself looks to be completely sealed with no way to open it properly. It's out of warranty now too. I'll try and post a pic, but the ball dome portion just has a seam around it and the back. There's no obvious way to open it. I even thought maybe the black lens ring on the outer face might pop off or unscrew, but I haven't messed with it. Thanks a bunch for your help. You guys are great to extend and hand even though this isn't your camera. That only inspires me more to make a purchase of some product from you soon! Thanks again.