Originated in Zhongshan, Guangdong, founded in 1982, Lanju has developed into one of the leading enterprises in China's household health insecticide industry, and has participated in the formulation (revision) of almost all national standards and industry standards in China's household insecticide industry, and its market share is comparable to that of radar.
 
Similar to Radar, Lanju mainly sells aerosol-based cockroach killing products. Elemi aerosols still use the outdated oil-based aerosol formulation. The production cost of oil-based solvent formula products is relatively low, and the solvent is used in deodorized kerosene, aviation kerosene and other volatile organic compounds.
 
The active ingredient of the cockroachicidal aerosol is still pyrethroid, which is divided into three types: quick-killing, fragrance-free and clear, and the concentration of the drug contained in it is different. The quick-kill type is designed to kill insects quickly, the spray smell is slightly stronger, and the content of pyrethroids is also the highest, which can reach twice the concentration of the other two. If you don't like the taste of aerosols, it is recommended to use the unscented type, but even the unscented type can have an unpleasant taste, which is a common problem with insecticidal aerosols. In 2018, Lanju also developed a water-based aerosol, but it was not sold on a large scale and was difficult to buy.
 
The cockroach bait of the olive chrysanthemum uses 0.2% chlorpyrifos as the active ingredient, and fipronil, imidacloprid, fluorogenol and other pesticides, chlorpyrifos is also widely used in agriculture and health pesticide products, it belongs to the high-efficiency, broad-spectrum, moderately toxic organophosphorus insecticide, since 1965 Dow company developed, in agriculture and public health in a large number of applications, and recommended by the World Health Organization. The test of Han Jinyi et al. in "Sinochem Sanitary Insecticidal Equipment" showed that chlorpyrifos bait cockroach has good palatability, stable efficacy at higher temperatures, and rapid action, and is also one of the drugs often equipped by PCO (pest control) professionals.