FREE Box of Twenty Mule Team Borax Giveaway and Sweepstakes! 100 second place winners will receive a box of 20 Mule Team Borax with a bottle of Purex PowerShot Natural Elements detergent. One grand prize winner will receive a NEW washer and dryer set. If you are 18 or older and a US resident enter daily for your chance to win one of these prizes! Contest ends June 30, 2015.