Bee Smoker Fuel – Yarn – 100% Cotton The Perfect Fuel to Calm Your Honey Bee Hives and Swarms With over 25 years in the textile industry, LuRay Textiles knows a thing or two about cotton. From our customer feedback and internal testing, we have simply been told that this is “the best smoker fuel I’ve ever used” and that was from a gentlemen who’s been a profession beekeeper for over 40 years. That says a LOT about the quality of this product.