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lCleaning by mud: for the Gramoxone, it can be passivated by mud, loss of efficacy. Well, just cleaning Sprayers some times by mud , that’s ok.lP lastic drum sprayers: Firstly, put in 5% of hot alkaline water (Water temperature above 60 ℃);shaking it every 10 mins. After 2-3hours, put out all water, & clean it.Iron bucket sprayer : First pour into 1% of the black vitriol water ( ferrous sulfate solution), soaking around 2 hours; then clean it. If spraying herbicides with the sprayer, if the cleaning is not good, the crop will bring chronic injury, affecting crop yields.