BASF supplies agricultural products and chemicals including fungicides, herbicides, insecticides and seed treatment products. Insecticides are typically more toxic to aquatic life than herbicides and fungicides. Chemical controls include horticultural oils or the application of insecticides and herbicides. It is also used as an agricultural spray adjuvant for water-soluble insecticides, herbicides, and fungicides. Boron is used in insecticides and herbicides. In general, vetiver is tolerant to herbicides and pesticides. Lack of herbicides and pesticides improve biodiversity fitness and population density. The active ingredient of the Monsanto herbicides is the isopropylamine salt of glyphosate. Allomones include flower scents, natural herbicides, and natural toxic plant chemicals. Weeds that can resist multiple other herbicides are spreading. Dicamba salts used in some herbicides are highly soluble in water. Chlorinated herbicides exhibit a lower impact on arsenic desorption than phosphate type herbicides. Atrazine continues to be one of the most widely used herbicides in Australian agriculture. Detected perchlorate originates from disinfectants, bleaching agents, herbicides, and mostly from rocket propellants. Ethylamine is a precursor to many herbicides including atrazine and simazine.