Someone invented a product to open those hard clear packages.
Today I discarded some empty paint cans. What would be wrong with rinsing them out and putting them in with the other metal (food)cans? Is there some difference in the metal?
See? It is questions like this where they should address what can and can't be recycled in greater detail, so that we do not needlessly fill landfills. If say something like paint cans is not allowed, then rinse them and save. And when we get enough metal, call the junk man to come and get it for scrap metal.
I hate wasting anything, and needlessly filling landfills. It makes the human race seem totally ignorant.