alternative, environmentally friendly produce shipping box was field tested in watsonville last week. the wax-free boxes are designed to reduce greenhouse gases and excessive volume at the landfill. green bay packing and interstate container manufacture the boxes, which use a vegetable oil coating instead of wax. wax coated boxes account for 4.5 million tons of gasses each year, with 1.35 million tons of coated boxes that are landfilled or burned.