Mother Nature's Muscle presents....
Concentrated and dilutes to one part product and 5 parts water.  Ultimate Strength- Calcium Rust and Lime Remover is environmentally friendly and CFIA Approved. It is a tub, toilet, tile, and grout cleaner made from an organic salt/surfactant blend designed to quickly penetrate dirt, oil, grease, calcium carbonate, lime, rust, and other everyday soils.