Sulfur Stick are great for treating oak barrels used for winemaking before dry storing. Light a small fraction of a stick and suspend in the barrel to burn before the barrel is put away for storage. Burning sulphur in a closed barrel burns off oxygen, which will keep bacterias from growing until next use. Approximately 1" width. Sulfur Sticks are used by some winemakers to treat oak barrels.
In general, it is recommended 1/3 to 1/2 of a stick, per 60 gallon barrel. As all sulfur sticks may not be created equal, this equates to 1" by 2" - 3" per 60 gallon barrel.