The Stink Factory uses the highest quality inks, scented oils and printing presses to create our incredibly long-lasting scratch n sniff stickers. With unique and mouth-watering scents like these, you're getting hours of entertainment! Each sticker pack includes 2 sheets of scented stickers, totaling 26 stickers per pack. All components for Dr. Stinky's Scratch-N-Sniff Stickers are proudly made in North America. What enables our Scratch-N-Sniff Stickers to last so long? We use Micro-encapsulation, a process where fragrance is captured into a tiny bubble. The bubble is then applied to paper during the printing process. Each microscopic bubble attaches to the fibers of the paper. Only when you scratch the sticker is the bubble broken and the scent released. By encapsulating each scent, the life of our Scratch-N-Sniff stickers is drastically increased! The Stink Factory performs extensive safety tests. Dr. Stinky's stickers are extremely popular with young boys and girls, make fantastic party favors, and are a hit with teachers and students. Assortments may change due to availability. Collect them all!