At the national level,<unk>  is regulated by the United States Environmental Protection Agency as a restricted use pesticide. Because of its toxicity and carcinogenicity, distribution and use of<unk>  is available only to licensed professionals and specially certified growers who are trained in its proper and safe use. In the US, occupational exposure limits have been set at 0.1 ppm over an eight-hour time-weighted average. Agriculture In 2008 the US EPA re-approved<unk>  as safe for use in agricultural settings, stating that treatments "can provide benefits to both food consumers and growers. For consumers, it means more fresh fruits and vegetables can be cheaply produced domestically year-round because several severe pest problems can be efficiently controlled." To ensure<unk>  is used safely, the EPA requires a strict set of protections for handlers, workers, and persons living and working in and around farmland during treatments. EPA protections were increased in both 2011 and 2012, reducing fumigant exposures and significantly improving safety. Protections include the training of certified applicators supervising pesticide application, the use of buffer zones, posting before and during pesticide application, fumigant management plans, and compliance assistance and assurance measures. Used as a preplant soil treatment measure,<unk>  suppresses soilborne pathogenic fungi and some nematodes and insects. According to<unk>  manufacturers, with a half-life of hours to days, it is completely digested by soil organisms before the crop is planted, making it safe and efficient. Contrary to popular belief,<unk>  does not sterilize soil and does not deplete the ozone layer, as the compound is destroyed by sunlight. Additionally,<unk>  has never been found in groundwater, due to its low solubility. California In California experience with acute effects of<unk>  when used as a soil fumigant for strawberries and other crops led to the release of regulations in January 2015 creating buffer zones and other precautions to minimize exposure of farm workers, neighbors, and passersby. High сoncentrations "Chlorpicrin, it smelled like flypaper" gas identification art<unk>  is harmful to humans. It can be absorbed systemically through inhalation, ingestion, and the skin. At high concentrations it is severely irritating to the lungs, eyes, and skin. In World War I German forces used concentrated<unk>  against Allied forces as a tear gas. While not as lethal as other chemical weapons, it caused vomiting and forced Allied soldiers to remove their masks to vomit, exposing them to other, more toxic chemical gases used as weapons during the war.
Chloropicrin
Eszopiclone
Zopiclone
Diflorasone diacetate
Flumetasone
Fluticasone furoate
Clobetasone
Mibolerone