Versions of Washington Code 70A.505.090 - Producers must participate in an approved product stewardship program on LawServer 2023 Washington Code 70A.505.090 – Producers must participate in an approved product stewardship program 2022 Washington Code 70A.505.090 – Producers must participate in an approved product stewardship program 2020 Washington Code 70A.505.090 – Producers must participate in an approved product stewardship program