Amazon has the 4-Count OxiClean Washing Machine Cleaner with Odor Blasters for $7.49 - 25% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (cancel anytime) = $5.25 with free shipping on $25+ or with Prime (extra 15% off for 5+ S&S orders).