Although beeswax sulfur candles are better for the environment than pesticide foggers, they're just as harmful to your lungs and mucous membranes, so gloves, goggles and respirators are mandatory.

But now its getting very difficult to source sulphur candles as they are now banned for use on plants as a pesticide although interestingly they still can be used as a greenhouse cleaner which is what I use them for. However companies that make them have decided not to bother with re-registering them due to the extra cost and have ceased manufacture The danger when people start to believe their own publicity is that they often fall off their own ego. Seriously, it does sound a lot of fiddly (and dangerous?) work just to avoid paying a bit more than a proper sulphur candle which always works at the first lighting and without having to be messed about.I might have to use Jeyes fluid this year as I can't get any Armillatox (well at least I can't get it from my usual wholesaler)

I also have a Poly tunnel - I haven't had any issues with it from a bug point of view and I am wondering should I use Sulphur Candles in it?I certainly cant do this at the moment , since although Cornwall is not as cold as other parts of the country ,it is still too cold to take out all my plants and stand them outside while I clean it .