Hot box sulfume and 500g sulpfur Safely eradicate spider mites Sulphur has long been used for controlling various insect problems but this is the first safe and effective unit for the hobby grower that we have found. Unlike many other units, this one vapourises the sulphur rather than burning it which means that no nasty chemicals are released into your grow room and that it's safe to use whilst your plants are still in the room. Effective at treating existing infestations or for preventing future problems, the Sulfume is highly recommended as a guaranteed Spider Mite control measure.