Sarvhitkari Gau Diyas are completely made of cow dung. They not only produce oxygen but also removing the pollution caused by the carbon present in air in the environment. Ashes of it can also be used as organic manure and to improve soil fertility. Gau Deep and other products of Sarvhitkari provide opportunities to the cow herders/farmers by giving them the direction of self-reliance. These Diya are made with pure desi cow dung. No chemicals have been added. Sarvhitkari Gau Diyas will absorb the ghee or oil however these diya are intended for single use. Does not pollute the soil upon being disposed.