Waterpik Cordless Water Flosser Opt for a water flosser to target hard-to-reach plaque and food debris between your teeth. The Waterpik Cordless Water Flosser ($70) is portable and won't take up too much space on your bathroom sink. Image Sources: amazon.com and Getty / katleho Seisa Waterpik Cordless Water Flosser $70 from amazon.com Buy Now