Start by checking the packaging, as well as the product description for the term 'natural incense sticks'. This indicates that the wholesale incense sticks or cones you’re browsing are crafted from natural ingredients, which is generally better for you and your customers’ health when burned regularly. It’s also always worth doing a little research into the source of the fragrance, as well as the composition of the incense itself so you’re better able to answer any customer queries. Never hesitate to reach out to the suppliers you’re buying from to answer any questions you may have.