The Roundup Custom Aquatic Terrestrial Herbicide is a post-emergent, systematic herbicide with no residual soil activity. It gives broad-spectrum management of many perennial weeds, annual weeds, woody brush and trees. The active ingredient (Glyphosate) obstructs production of an enzyme in plants and microorganisms that are indispensable to the formation of specific amino acids. It acts through the plant from the point of foliage contact to and into the root system. Apparent effects will be gradual wilting and yellowing of the plants. On most annual seeds, reactions will be noticeable within two to four days. Roundup Custom is formulated as a water-soluble liquid and may be enforced through common equipment after dilution and mixing with water or other carriers. Roundup Custom requires the use of a non ionic surfactant