Register at pampers.com in the U.S. or pampers.ca in Canada. Look for the Gifts to Grow link on the site to start entering the code found inside qualifying Pampers wipes, diapers and training pant product packages. The website will keep track of your points. When you are ready to redeem them for rewards, follow the instructions on the site
You have to send them first so that winner can claim they got it and you can get your credits. If you wait to send the codes it can take way more than 2 days for you to receive your credits. Credits are automatically transferred to trust sellers and you haven't earned yours yet.