Update: The Wisk sample has been a pretty popular one and it’s back again!  This time from CVS.

Get a free sample of Wisk Laundry Detergent. Visit the Costco page and scroll down to the middle of the image. Click on get a free sample to be taken to the form.

Allow 4-6 weeks for delivery available while supplies last. Available to U.S. Residents only. Limit one sample per household.

The one from Walmart looks like it is still available as well!

Update: The other two sites are out of samples. However Target now has this one!