RE: rubber boots and dry rotting?
I think it must be with the way you're using them or the way you store them in hot weather. Keep them kool and out of the direct sun when you're not using them. Makes no sense to lock
em up in a car or garage where they can bake. I hang mine upside down where they'll get air. In the summer I stick them in storage tubs in the basement. Make sure if you have gas hot water or furnace you don't expose them to long term fumes. Seal them up.