These products are central to many Hindu rituals and are considered pure and sacred, used for purifying the environment and spiritual cleansing. Panchagavya products for pooja are items made from a mixture of cow products. Common pooja items include organic, chemical-free cow dung cakes for havan or homa, diyas (lamps) for lighting, incense sticks, and dhoop (incense cones) which are believed to release beneficial gases and positive energy when burned.