Visit the Purex site to get a link to a new $1 Purex Crystals printable coupon (remember, the Walgreens deal is coming up the week of 3/13!). You can also watch a few videos on the Purex page, one of which is how to use Purex Crystals.
There is another $1 Purex Crystals printable on Coupons.com (zip 60625) if you’re grabbing coupons to hang onto for the upcoming deal!