QuelexTM 200 WG (Reg. No. L10759) is a mixture of Arylex® (halauxifen-methyl), a systemic auxin-type herbicide (Group O) and Florasulam, an ALS (AcetoLactate Synthase) enzyme inhibitor-type herbicide (Group B). The product controls weed by disrupting normal plant growth patterns and/or by inhibiting production of the enzyme essential for production of certain amino acids needed for normal plant growth.