Is trophy rock better to use than just salt ? I started a salt lick feb.2012 on a stump with 50lbs. of just salt. I went back in july and put 50 more pounds on it. I went back yesterday and put 50 more pounds on it. The stump is gone and there is a hole in the ground about 4ft deep and 5ft wide. I've got 15 dollars in the salt lick and the trophy rock is about 20 dollars. This is a pic of the stump last year.