Burlap is a great fabric to use as smoker fuel primarily because it burns nice and slow, giving you consistent smoke. This is very important because when the bees get angry, you need that smoke ASAP to calm them down. In addition to being a slow burn (which is also important in terms of fuel quantity i.e. it lasts longer), the smoke that it does produce is more or less uniformly white/grey. It is not a “polluted” smoke. This makes a difference since clean and consistent smoke is the best for keeping the bees duly subdued. For best results, leave new burlap outside for a few days before using. This accomplishes a few different things. Exposing the burlap to direct sunlight will cause the linseed oil scent to “evaporate” off the fabric, which helps to purify the scent of the smoked fabric. As well, many people have reported that using old/slightly broken down burlap is easier to burn and will provide the most consistent smoke output.