I have several packages of Rainy's brand round rubber leg material that are behaving oddly. My large packages, stored in their original zip lock bags for over a year, are in great condition. The smaller assortments that I have placed in with my assortment of"active" materials (a large Plano tackle box) and are just lying loose have completely dried out and are crumbling apart.
Has anyone else had any similar experience? How can it be explained?