Chametz owned by a Jew during the holiday may not be consumed even after the holiday is over. Consequently, when shopping for chametz products after Passover, one must take measures to avoid chametz products that may have been subject to Jewish ownership during the festival. Because these restrictions are not limited to private individuals, Jewish owned stores, food manufacturers and distributors are required to rid themselves of chametz before Passover in an halachically valid manner, and consumers need to stay clear of chametz products that were in such Jewish possession during Passover. Because tracking distribution is very complex and these determinations can be difficult, we suggest that ask your Rabbi for guidance.