Country's Best GRIT+ is especially formulated for gallinaceous birds with flint oyster shells, seashells, redstone and vitamin pellets. GRIT+ does not only promote your poultry's digestion, it also has a positive effect on the skeleton and the formation of the eggshell. As a supplement to your animals daily needs, the grit has been enriched with extra vitamins and trace elements for an optimal health and condition.