If you are among those who swear by cow urine and dung products, October will put more choice at your fingertips. A Rashtriya Swayamsevak Sangh-backed pharmacy is bringing dozens of its natural cosmetics and medicinal products — most of them imbued with “gau goodness” — to Amazon. After luxuriating in cow-dung soap lather, you will also have a choice of its “Modi” and “Yogi” kurtas to pull on.