Jeyes Patio & Decking Power 4-in-1 removes algae, mould, mildew and dirt from patios, driveways, and tarmac. Easy to use, just mix, apply and leave to dry. Effortlessly removes the toughest of dirt, wuth no scrubbing needed. It is designed to offer long-lasting results. Kills 99.9% of germs. Covers up to 90m. Warning Always read directions before use. Keep out of the reach of children and pets.