WisStar via Amazon offers the QQcute Cordless Rechargeable Water Flosser in Blue for $31.99. Coupon code "PW4RW775" cuts that to $25.59. With free shipping, that's $4 under our mention from a week ago and the lowest price we could find by $13. This IPX7 waterproof flosser features three operating modes, a 7.4-oz. reservoir, rechargeable battery, and two color-coded flossing tips. Deal ends March 31.