Citric acid is one of the commonest plant acids found in almost all fruit, wood and mushrooms. It has a very wide range of uses from descaling, cleaning and dissolving limescale and is an excellent anti-oxidant.Citric acid is completely biodegradable and is a household cleaning basic that should be in every home. made of raw plant materials Producted and packaged in Western Europe. Eco-friendly packaging. Biodegradable Please note at high concentrations, citric acid is not suitable for use an enamel, aluminium, marble or surfaces sensitive to acids. Protect coloured fabrics from splashing.