This super cleaner contains my favourite chemical Sodium Hydroxide. It is such a great cleaning product for pretty much any tough job. It is ideal for waterblasting, dilutes up to 80 parts water to 1 part Powa-Kleen. Or you can hose the house down, dilute the Powa-Kleen at 40 to 1, spray or brush on, then hose off. The house will shine. No need for nasty bleaches. But not only that! Powa-Kleen is great for cleaning the black that builds up in vehicles, like sills, channels, wheel rims, under hoods. Also ideal for marine/boat/yacht cleaning in the bilge area. Give this product a go and you will not be disappointed. 20 litre also listed. GST invoice always supplied