I agree with the two posts above. Deer will hit it hard throughout the summer months. But going into fall things change. Apples ripen, corn fields are being harvested, acorns start falling and the rut is just around the corner. Everything in the deer's world starts to change in the fall. They become less interested in the salt and minerals and more interested in eating and fattening up for winter. They'll still go to it, but not as often as before.