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UPDATE: as of today, Smith's has a new Catalina offer generating on these. When you purchase any 4 a $1 Smith's coupon will print at checkout after you pay. Combine the Catalina offer with an Ibotta rebate to score 4 bottles for $0.06 TOTAL!
Check your Ibotta app for a coupon that is valid for .50/1 money back on 1 liter of Arrowhead Sparkling Water! These are on sale as part of the Mega Event for $.39. Making them an .11¢ moneymaker. Even better, when I made my purchase it triggered a .50¢ off 2 more at the register.
Keep in mind that the coupons that come out at the machine vary, but this coupon came out before I gave them my rewards number, so it's likely you will get one too.