RE: trace mineral
No, it's best to use only a small portion of the mix and honestly this should be enough for a few sights and nearly a couple seasons.
I should note to check you local game regs to see if mineral supplementation is legal. We are no longer allow to use this mix in Illinois since the threat of CWD a couple seasons ago so no one here is allowed to make anymore of the stuff.
However, mixes that were poured into and onto the ground from a few years ago are STILL active on many properties.