Revitaliser is a blend of composts with a trace of minerals, designed to be mixed into your regular soil to improve its performance for any sort of gardening. It contains no bio-solids (sewer sludge), includes the highest quality compost available, and was modeled by research done by the Soil Food Web. Inc. This will give a wonderful array of beneficial microbes. Contains a blend of humus; horse, turkey, and cow composts; humates and granite sand. 1.5 cubic foot bag.