Water-soluble granules containing 2.5% diquat and 2.5% paraquat are used in home gardens. Diquat is sold under several different trade names: Deiquat, Aquacide, Dextrone, Reglox, Weedtrim-D (Vanholder et al., 1981). Fletcher (1975) listed the commercial forms of diquat, many of which are combinations containing paraquat or other herbicides.