The ideal instrument to overcome common diseases of plants. It is ideal for greenhouse use. How it Works... the sulfur vapors 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. It is very effective on most plants where the following are present: powdery mildew, thrips in flowers & vegetables. ALUMINUM BODY, SULFUR VAPORIZER FEATURES: * Heat plate is automatically regulated to ideal * Vaporizing temperature (140 C ) * Quality construction * Safe (outside is not hot to the touch) * One unit is capable of treating up to 1000 Sq Ft * Suspend with jack chain 3 away from any combustible surface