Berkley Powerbait Trout Bait - Moldable and easy to use. Floating, biodegradable formula enhances dispersion of scent and flavor to attract trout from a long range. 92% biodegradable, 8% no degradable microscopic spheres, formed from natural silica. Moldable and easy to use Floating formula enhances dispersion of scent and flavor 92%; biodegradable, 8% no degradable microscopic spheres