This Greenhouse Vaporizer is an ideal instrument to overcome common diseases of plants, making it perfect for your horticultural and greenhouse needs. A heat plate helps produce sulfur vapors (at 140 C) that change the pH on the surface of the plant causing the environment to be unsuitable for fungal growth. The same pH change will significantly slow the reproduction of pests- acting as an effective means of pest control. One unit is capable of treating up to 1000 Sq Ft and the outside is safe to the touch. It is very effective on most plants where the following are present: powdery mildew, thrips in flowers & vegetables.