KGP agents can be exchanged for extra Hunter experience with the PBJ Agent across the ice from the hunter area, but many players just release the KGP Penguins as they are only worth 2 experience each. The PBJ agent will not accept ordinary penguins, and the only option is to release them or alchemize them. At level 60 and above, players report that it is very rare to see a trap fail using Box traps.