Block Blitz Original Eco Cleaner 760g. Block Blitz Original Eco Cleaner is the low cost, efficient and environmentally friendly way to clean and protect your block paving, patio, concrete, tarmac, decking and more. Initially developed to clean and protect block paved surfaces which are notoriously difficult to keep clean, our original product was first launched in the domestic retail sector and quickly became the UK's best-selling block paving treatment. It is super powerful and has been reformulated to clean an array of outdoor surfaces. Compatible with concrete, block paving, stone, tarmac, resin, decking, gravel, decorative aggregates, rubber surfaces, artificial grass. Removes: dirt, grime, black spots/white spots and stains. Deters: Up to 99% of organic growth e.g weeds, moss, algae, fungus and lichens. New and improved formula. Self-cleaning action - No jet washing, no scraping, no scrubbing required. Product can also be applied using a pressure sprayer, meaning it can also now be used on vertical surfaces e.g. walls and roofs. Easier to dissolve. Deters algae moss and weeds for up to 6 months, removes patio blackspot. One product can be used on all previous product surfaces e.g. block paving, gravel, artificial grass, patios, paving slabs, tarmac, decking, resin drives etc. Contains no bleach, no acids, no biocides and is biodegradable. Quick and easy to apply, no measuring.