Get a free AirWick Freshmatic Pure. Simply purchase an AirWick Freshmatic refill and mail in the required materials to receive your purchase price back up to $5.50. Purchases must be made between 8/15/17 and 7/31/2018. Please allow 8-10 weeks for delivery of your refund. Items must be postmarked no later than August 15th 2,018 and received by August 31st 2,018 to qualify.