Over the weekend I washed out the greenhouse ready for the winter and, yesterday evening, I lit a sulphur candle in there to fumigate it.
This morning when I went to open it up, I found that only part of the 'wick' had burned and all the sulphur chips are still intact.
With hardly any 'wick' left, can anyone suggest what I might use as I don't know what it is exactly. It just looks like a piece of paper to me!