Since it was slid around to our lap while riding in the car, the swivel holster would collect crumbs from whatever we ate, soup crackers, fried chicken crumbs, etc... The bottom of the holster was closed, so there would be nowhere for the junk to go. Every once in awhile, we would rotate the holster upside down without the gun in it and bang it with our hand to loosen the crap to fall out. But it being a reliable revolver, i never worried that the crap would prevent the gun from working properly if needed.