Non-Passover dishes, pots, and hametz whose ownership has been transferred, should be separated, locked up or covered and marked in order to prevent accidental use. During the eight days of Passover, hametz cannot lose its identity in an admixture. Therefore, the minutest amount of hametz renders the whole admixture hametz , and its use on Passover is prohibited. Peanuts and peanut oil are permitted. Some Ashkenazic authorities forbid the use of legumes in a form other than their natural state, corn sweeteners, corn oil or soy oil.
Sephardic authorities permit the use of all of the above.
Consult Rabbi Kass for guidance in the use of any of these products. If permitted during the year, powdered and liquid detergents do not require a kosher for Passover label. Capsules are preferable. If you have questions, consult Rabbi Kass or Rabbi Pomerantz.