Same great Perception formula with the polymer matrix, but in a gel format and without any added fragrance, which is tough to find in gel packets. Great value too: you get 50 packets and a nice little box to keep them in. While on sale; much better deal than either loose packets or the bottle version. Each Perception unscented gel pack features: .08 milligrams total pheromone content Exclusive high performance water based polymer matrix 1 milliliter total volume 2 applications per gel pack! 50 packets per box!