Our rapeseed Maruta brand is manufactured in Japan and contains no animal products including bonemeal Nearly impossible to overfeed as it is long lasting Replace every 50 days in summer and 100 days in winter Each cake is approximately 1 0 x 1 0 in diameter Apply 1 or 2 cakes for average size container Will not deteriorate Specifications . Size 1 x 1 . Weight 0 1 lbs