4-Pack Crest ProHealth Advanced Alcohol Free Extra Deep Clean Mouthwash (16.9oz each) $9.94
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Amazon
Amazon has the 4-Pack 16.9oz Crest ProHealth Advanced Alcohol Free Extra Deep Clean Mouthwash (Enamel Care) for $13.98 - 5% off with Subscribe & Save (can cancel anytime) - $3.34 off coupon (check "Save an extra" box, eligible on first S&S order for this product) = $9.94 with free shipping on $25+ or with Prime.