Walgreens offers 2 Oral-B 54-Yard Essential Floss Containers in Mint for 18 cents, via the steps below. Opt for in-store pickup where available to avoid the $5.99 shipping charge. That's the lowest price we could find by about $4. It features a wax coating and is shred-resistant. To get this price:

View the Oral-B 54-Yard Essential Floss for $1.99

clip the $3 off coupon on the product page

add two to your cart and apply code "AUGUST20" for a final price of 18 cents