Indore Method of Composting:
In this method solid waste night soil and animal dung etc. are placed in brick lined pits 3 m x 3 m x 1 m deep in alternate layers of 7.5 to 10 cm height, till the total height becomes 1.5 m. Chemical insecticides are added to prevent fly breeding. The material is turned regularly for a period of about 8 to 12 weeks and then stored on ground for 4 to 6 weeks. In about 6 to 8 turnings and period of 4 months time compost becomes ready for use as manure. Insecticide used in Indore method was DDT but now because of very high half life of DDT in nature other suitable insecticide is recommended, e.g. Gamaxine.