GYCB baits are heavily salt-impregnated using a patented process. As an alternative, other manufacturers may coat the outside of their baits with salt, but this is an ineffective process that quickly dissolves the surface salt off of other vendors' baits in water, and does not have any value as far as the surface salt being a fish attractant. On the other hand, GYCB baits are impregnated with salt and there is always some salt within the bait at all times. Even take a bait that you have been tossing all day - roll the plastic between two fingers and feel all the salt crystals that come out of the bait. That's exactly what a fish tastes when it crushes down on the bait. Also, for those who like to soak baits in scent overnight, the surface-most impregnated salt will dissolve overnight, leaving tiny micro-pockets on the entire bait surface that fill up with the scent. This gives you a heavily scent-saturated bait overnight.
Yamamoto baits contain zero petroleum based oils, "The oils that we use (this is kind of the secret part) are both biodegradable and contribute to the taste or overall effectiveness of the bait, based on the opinions of the final judge in these matters, the fish."