One pack of Block Blitz Multi Pave Treatment covers approximately 15 sq.m of paving slabs, tarmac, resin drives, deckingBlock Blitz is a unique biodegradable mineral and plant based Barrier Detergent? which has been designed to clean and protect. Block Blitz uses soft wash technology to lift grime and deter unwanted organic growth such as algae, moss and weeds.Features:? 2 in 1 - cleans and protects? For paving slabs, tarmac, resin drives and decking? No scrubbing or jet washing? Deters algae, moss and weeds? Biodegradable? One pack covers approx 15 sq.m of paving? One pack used in 10 litre treatmentPackage Dimensions:? 380gPackage Contents:1 x Block Blitz Multi Pave Treatment 380g