A buddy of mine just bequeathed me with a HUGE box of old TFs (somewhere in the area of 80-90) to split between my own collection and eBay. Now, these are all very excellent display examples, but the main issue with them is that they were either on shelves, or sitting in a box under said shelves, so they're very dusty. Most of them aren't too bad, being from the recent movie lines, but a couple (notably, ones from RID and Armada) are very dusty, to the point where handling them results in a hand-washing afterwards. This is especially noticable on RID Optimus, Magnus, and Megatron, all of whom either have numerous dark, chromed, or white areas. What I'm wondering is how to clean these up enough for my own collection/eBay photography. A lot of these have electronics or mechanisms that I don't want to chance damaging with water, so I'm just looking what's best to clean the smaller nooks and crannies. Would a soft-bristle toothbrush be best, to avoid damaging paint/chrome/plastic. Any suggestions are really appreciated!