 Depending on the groundbait mixture, the balls may break up quickly and create a "cloud" of particles in the water attractive for mid-water feeding fish, or sink to the bottom where they slowly release feed to species feeding on the bottom.The amount of groundbait is optimized to draw as many fish as possible to the fishing place, stimulating them to feed without over-feeding, which will stop the fish from biting.Anglers may use groundbait at the fishing site (or swim) for several days before fishing, and then allow the fish to regain their appetite for a brief period before fishing begins.