Conquest 300 ml is an herbicide that is used to control a variety of broadleaf weeds in agricultural and non-crop settings. It contains the active ingredients picloram and triclopyr, which work by disrupting the growth and development of weeds. Conquest 300 ml is a non-selective herbicide, which means that it will kill all plants that it comes into contact with, so it is important to use it carefully and only in areas where you want to kill weeds.