Description Reviews This is a set of three scent discs. These are like mini sponges that work great for scent discrimination work. You place your scent on them and they absorb like a sponge. They are individual packaged in Ziploc baggies so after being scented for use you can store and reuse them without the disc being contaminated from the other discs that may be scented in a different smell. USA Made. Set of 3 Round Discs