Harden Up! supports the formation of strong egg shells in laying hens. It’s particularly good for young hens at the Point Of Lay (POL), or older hens nearing the end of lay. If you are seeing signs of weak or rough egg shells then Harden Up! Is just what your hens may need! It also greatly aids healthy gizzard function and performance which is of crucial importance to regular, high-grade egg production and healthy hens. A special blend of vitamins, trace elements, calcium, iron and carbohydrates all fused together into a delicious muesli bar that you hens will love.