Each figure of my collection is storaged in a ziploc bag with his accesories inside three boxes: one for cobras, one for brazillian figures and another for hasbro-joe figures. I have a big ziploc for filecards and some others boxes for my very small collection of vehicles. No dusty at all!!!!!!!
If I buy a dirty figure than I clean with detergent and tooth brush.

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Gatilho

http://www.flickr.com/photos/97583331@N00
http://gijoe.19.forumer.com