Biostrike is a putty indicator that makes adjusting the depth and size of indicator simple. Beyond that, it is reusable, biodegradable, and environmentally friendly. BioStrike can be rolled in a ball with wet fingers and applied anywhere on a leader, then removed and placed back in the container. Bio-Glow is the after-hours BioStrike. Just apply the putty to your leader, charge with the UV Mini Lamp or UV Power Light and within seconds your strike indicator is glowing bright.