Dilute powder 1:50 up to 1:100 with water (e.g. dilute 1 cup powder in 12 L - 25 L of water) depending on the level of contamination to be removed. Wet floor with water. Sprinkle powder over contaminated area. Agitate with a hard or deck broom. Leave for 30 minutes and rinse off with warm or hot water.
Use with caution on metal or painted finishes. If possible, test a small, inconspicuous area first