Clethodim is a selective post-emergence herbicide. It is a member of the cyclohexanedione group of herbicides. It has the inhibition of acetyl CoA carboxylase mode of action. Clethodim is a systemic herbicide which is translocated from the treated foliage to the growing points of the leaves, shoots and roots. Uptake into the plant is primarily through its leaves.Thorough coverage of the foliage is important for consistent grass control. Susceptible grasses that are actively growing will undergo a burn-back and colour change after treatment. Leaf foliage will first change from green to yellowish, then purplish and finally brown colour.