We are commanded to have no chametz in our possession during Passover. Do we have to burn the closed bag of snitzel in the freezer? No. Our rabbis have made it possible for us to sell this chametz to a non-Jew prior to the holiday.

Generally, we sell the chametz to a Rabbi who in turn acts as an agent and sells it to a non-Jew. The sale is real in that the non-Jew can actually get the chametz if he/she wants. And if the non-Jew decides to keep the chametz, then he/she must pay for it after the holiday.

You can use this Official Online Form for Selling Chametz to sell your chametz before Passover.