DYNAMITE Swim Stim F1 2mm Pellets New for 2018 is the latest addition to the Swim stim stable from Dynamite. Swim Stim is Dynamite’s best selling brand name so it seemed logical to add a unique F1 formulation. The light and airy pellets with a sweet smell just scream carp during the less productive months. Can be fed loose or moulded around a method feeder set up. They should draw wary fish into your swim WITHOUT overfeeding them. Also available is a light, airy sweet fine groundbait mix in the same award winning formula. The pellets and groundbait should work hand in hand.