Amazon has the 16oz Mr. Clean Deep Cleaning Mist Multi-Surface Spray Refill (Lemon Zest Scent) for $3.24 - 5% off with Subscribe & Save (can cancel at any time) - $0.94 off coupon (check "Apply coupon" box) = $2.18 with free shipping on $25+ or with Prime (extra 15% off for 5+ subscribe and save orders).