Prochem B198 Rust Remover 1L is a specially formulated thickened gel cleaner for the removal of rust, iron mould and old stubborn blood stains from carpets and fabrics. Intended to be blotted with paper, white towelling or microfibre and thoroughly rinsed away using extraction once treatment of area has been completed. Old rust spots will require longer contact time and agitation. Thorough extraction will prevent re-appearance of rust spots. Always test on an inconspicuous area before proceeding.