Prolong the life of all wood food preparation surfaces, from butcher blocks and cutting boards to salad bowls and wooden utensils, with Block Oil. A blend of refined seed oil, lemon oil, vitamin E, and carotene, Block Oil is a completely safe, natural, and non-toxic finish with lemon oil . It penetrates, conditions, and seals all natural wood surfaces, and keeps wood from cracking, drying, or absorbing food odors.