Pecham US via Amazon offers its Pecham 3-Mode Water Flosser in Blue for $29.99. Coupon code "5AUBPG54" drops it to $20.99. With free shipping, that's tied with our mention from five days ago and the lowest price we've seen. (It's the best today by $18.) It features three operating modes, a 360° nozzle, and four jet tips. Deal ends February 28, 2018.