Block Blitz Original Eco Cleaner, the easiest and most effective way to clean Block Paving, Driveways, Patios and more. The pack contains two pouches of a unique biodegradable mineral and plant-based barrier detergent designed to clean and protect outdoor surfaces. Enjoy beautiful-looking surfaces without the hard work or hassle of jet washing and scrubbing using these superb Block Blitz 2-in-1 treatment formulas.Powder power - the powdered formula is 100% non-abrasive, contains no bleach, acids or biocides, is not toxic to aquatic life and is biodegradable. Plus, it uses no-clean technology to lift grime and deter any unwanted organic growth such as algae, moss, weeds and more without having to scrub, scrape or jet wash.Rainfall activated - the formula crystallises on contact with outdoor surfaces and is designed to help repel dirt and grime, as well as working to protect your surface from regrowth for up to six months. Every time it rains, the product is reactivated and the cleaning process keeps on going, this really is the easy way to clean! Plus, one sachet is enough to cover 15+sqm, around the same area as 1.5 car parking spaces, in your pack you have enough to cover 30+sqm or around 3 car parking spaces.2-in-1 solution - Block Blitz will not only clean your surface on application, but it also boasts a slow secondary cleaning effect that helps prevent the regrowth of algae, moss and weeds for months after use.