i would just put out the whole bag. scratch the ground a bit in a 3 foot circle. let nature do the rest. the rain will do its thing.it might be cool for trail cameras but i wouldnt bet on heavy use when the hunting season opens.if you want to save money go to walmart or the home depot and just pick up a 40 lb bag of solar salt used for water treatment. its about 4$ and will do the same thing.it might last a month or two. its kinda neat to see deer come in from far and wide to use the lick but it most likely wont do much for the antler growth. they will dig and make a crater after a while.