Aug 21, 2023 · Dig a Pit. Dig a pit of a depth of 45 cm and place the soil on one side. Put four poles having a length of 2m each one for each corner of the pit. Chop your materials into small pieces and put the first layer. Materials used in this step include rice and sorghum straws, finger millet, potato or banana peels, animal wastes, kitchen wastes, e.t.c.