Apply this product to all shallow and deep-diving hard baits and swim baits for optimal results. The Silver/Pearl with Blue flake flash effect not only adds visual appeal, but the scent is proven to attract and entice fish to bite and hold on. With only one application needed while bass or crappie fishing, Thump Gel Crank’n Gel is the top choice for a long-lasting and effective natural bait scent attractant.