LTP
LTP Ferrex Iron Stain Remover & Stone Cleaner| removes Rust outbreaks, Rust discolouration & Cement Mortar Stains from Ferrous Hard Stones (1 Litre)
SmartSeal
Smartseal Rust Remover - Best Rust Remover Solution – Safe Acid Free - Easy To Apply Rust Stain Remover. For Use On All Types of Natural Stone And Concrete Surfaces Without Causing Damage (1 Litre)
Ecoprotec
ECOPROTEC Rust Stain Remover for Paving Porcelain Stone & Tile (1 Litre)
WD-40 Specialist
WD-40 Specialist Rust Remover Soak - Fast Acting Rust Dissolver. 1 Gallon (Pack of 1)