These are smelling strips to use if you are conducting a smelling session with more than one person. Simply roll-on the Essential Smell at the tip of the spelling strip, and ask your attendees to hold the other end and smell the scent. Ask them to try to describe but they are smelling. (Is it fresh clean sweet fruity floral?). Then give them clues from the clue cards that are included for all corresponding Essential Smells within each kit.