The Advised Cleaning Agents for stains created by beverages, ink etc. are as follows
Beverages
Beer / Coffee»»Alkali (Sodium Hydroxide / Potassium Hydroxide)
Juices / Tea»»Sodium Hypo Chlorite (NaOCl)
Colas»»Acids (Hydrochloric Acid*)
Ink
Ball / Felt Pen / Marker Ink»»Solvents (Turpentine, Acetone, Trichloroethylene, etc.,)
Liquid Ink»»Solvents (Turpentine, Acetone, Trichloroethylene, etc.,)
Acids (Hydrochloric Acid*)
Others
Cement, Calcar, Cigarette, Paints, Rust»»Acids (Hydrochloric Acid*)
Tar, Edible Oil, Glue, Resins»»Solvents (Turpentine, Acetone, Trichloroethylene, etc.,)
Ice Cream»»Alkali (Sodium Hydroxide / Potassium Hydroxide)