The bees use wax to make the comb. Honeybees are reared in the comb and it is where honey and pollen is stored. It is good practice for the old comb to be removed from the hive on a regular basis as it can harbour pathogens. Bees naturally want to build comb so providing them with new frames serves their natural instincts. The Bee Farmer puts the old comb through a steam extractor which renders the wax from the frames and passes through a filter. The steam sterilises the wax and frames. The frames go back to the hives, the wax is re-filtered and cast into blocks for sale or use in other Bee Farmers products. The wax is not bleached just filtered at least three times.