Our Maruta brand Rapeseed is manufactured in Japan by the suppliers to the Isei Shrine. Nearly impossible to overfeed, as it is long lasting-Replace every 50 days in Summer, 100 days in Winter.Each cake is approximately 1" diameter by 5/6" Thick, and consists of Rapeseed Oil Cake and its powder. No Bonemeal or any other animal ingredients. 1.1 lb