Topsoil is a mixture of sand, silt, clay and broken down organic matter, called humus.
Premium topsoil is our mixture of topsoil, compost and sand that is tested at neutral PH levels. It is recommended for garden beds, under lawns and makes a very god potting mix. .
Compost is rotted organic matter. It is a natural fertilizer.
Clean fill is basically the spillage of all our products from across our yard. It contains no contaminants.