A bag of top dressing covers about 1–2 square metres. When you choose one, make sure it’s a good quality soil, compost and nutrient mix, with no lumps and clumps. There are two ways to put the top dressing on the lawn: you can load it into a wheelbarrow and shovel it onto the lawn in piles about the size of a pillow. Or you can place the bags on the lawn, cut them open and pour top dressing out in piles. When handling top dressing always wear a dust mask, safety glasses and gloves.