We have noticed an increase in the number of phone calls from our customers, asking about the difference between birch tree and corn cob xylitol. Their concerns have come from some negative advertising directed at xylitol manufactured outside the USA. Most companies selling xylitol products are just as concerned about protecting the environment and providing a quality product as you are. There is no justification in cutting down a tree when the exact same product can be harvested from corn cob (renewable resource) at one third the cost (non-GMO and pesticide free). There is no difference in taste, health benefits or quality, only price.