supplement only. I put it on stumps and rotted logs. As it soaks in they lick the wood absolutely smooth and start to dig under it for the caine. If you read the directions it is a long term deer atraction, but you needto keep refreshing. So a lot of people just use the salt blocks as they are cheap and not high maintenance. Buck Jam usually gets quicker responses because of scent as an attractor. they will lick it up.