These are the non-toxic deodorizer disks used by the diaper services to eliminate the dirty diaper odor in a pail or bag. They have a fresh citrus fragrance. Just place them in your pail, or if you have a liner that has a pouch, you can place one in there to get rid of that funky smell. One lasts approx. 3-4 weeks, individual preference may vary. Made in the USA. These come as a package of 10 for $5.50 or $.60 each.