They visited all the houses in the village for a firsthand observation of conversion of night soil into manure through simple yet innovative technology. We needed to demonstrate how twin pit toilet is one of the best suitable low-cost technologies in rural areas. Second, there is a stigma attached to emptying these pits after closing them for six months or a year. Once you close one pit for months, the excreta gets converted into clean compost," Iyer said. The pit can be used again when the second pit is filled up.
Source: Times of India February 19, 2017 02:03 UTC