Discover This Week’s FREE Samples. Freeosk is offering FREE Secret Clinical Strength Completely Clean & more at Sam’s Club locations from 05/26/2023 through 06/01/2023. If you want to get this freebie, click on the “Get FREE” button, find a location near you and head out to the store. Download the Freeosk app for Android or iPhone so you can redeem the samples at the Freeosk location.