Until December 12, Giant Tiger has Air Wick Freshmatic Refills on sale for $3.99.
Use the $2 Holiday Scent Coupon HERE and claim the $2 Cash Back from Checkout51 HERE - and get it for FREE!
Checkout51 is offering an additional $0.50 Cash Back if you purchase this from Walmart - so I would suggest price matching - and let them pay you $0.50 for taking it out of the store! :)