For general floor and bathroom cleaning, dilute at a ratio of 1:100 - 1:50 (1 - 2% solution, 10-20ml per litre) with warm or cold potable water. In areas where contamination is suspected, a ratio of 1:20 (5% solution, 50ml per litre) should be used. For toilet bowls and urinals, application may be used undiluted; spray or pour onto surfaces then brush and flush.