What are the implications in finding during Pesach some closed package of chometz item over Pesach that was not cleanly put away in the box? We make sure to write “and anywhere else”. Should this be covered / destroyed or (during the intermediate days) put away with the rest of the chometz belonging to the goy? I know some people have a minhag of not selling chometz gamur but our families never brought this up (e.g. as a child I recall a pasta machine which is impossible to clean). Thank you