If you missed the first free sample, here is another sample to get Wisk Laundry Detergent! It is from Costco, but you DO NOT need a Costco membership to request it.
Another Free Sample of Wisk Laundry Detergent!
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I don't have a costco number but I tried it anyway. Once I entered all the info it said invalid costco number so I guess you do need a membership.
If you type in a random 10 numbers it should work.
I tried it also without a membership. You have to have a membership number. I also tried ten random numbers but it did not work.