This product contains 100% natural ingredients - no mess, no waste in this 12 seed blend These high energy suet cakes have added Calvita vitamin mix to attract more birds to your garden. Use this food to attract blackbirds, robins, house sparrows, long tailed tits, chaffinches, blue tits plus many more birds to your garden. Suitable to be fed to birds all year round. This feed can be fed to wild birds from a hanging feeder, bird table or the ground. Complete in plastic free refill box which can be recycled.