How to Make Sulfur Candles
A sulphur candle is a large, sulfur-containing torch bucket used to fumigate and kill pests and fungal spores in greenhouses. They have also been used extensively as patio bug repellents. The acrid smoke from naturally-burning sulphur interferes with inset respiration and quickly clears the air. Though the ingredients of sulphur candles are quite plain and simple, they can be pricey. Homemade sulphur candles are a safe alternative to expensive and hard-to-get candles from greenhouse suppliers.
Instructions
Light a fire on an outdoor or camp stove. Note: this process cannot be performed indoors. Place a 5-quart dutch oven or stew pot on the fire.
Cut the candle wax into tablespoon-sized chunks with a heavy knife. Place the chunks in the pot and stir slowly with a wooden spoon, as the wax begins to melt.
Stir the hot wax continuously until it has fully melted and has the consistency of heavy syrup.
Stir in 8 ounces of pure sulphur powder and stir rapidly until it is fully incorporated.
Place the metal cans on a wooden board or workbench. Remove the pot from the heat and pour the wax mixture into the metal cans up to 1/2 inch from the top. Allow the tubs to cool for one hour.
While the wax is cooling, size the wooden wicks by standing a wick against the base of the metal can and cutting off the extension above the upper lip of the can. Wooden wicks are essential in sulphur candles to prevent the candle from self-extinguishing. Repeat this sizing process with the other wicks.
As the surface begins to solidify, insert the wooden wicks through metal wick tabs for all but 1 inch of their upper length. Insert the bottom end of the wicks into the candle, all the way to the bottom. Move the metal wick tab down until it is floating on the candle's surface.
or buy your own?
http://www.amazon.co.uk/Deadfast-300g-Greenhouse-Sulphur-Candle/dp/B0017RPGOK