1/2 cup powdered cleaner (such as Spic & Span®)
1 cup ammonia
1/2 cup cool water
CAUTION! Do NOT use powdered cleaner that contains bleach.
Mix. Puddle the solution on the floor in a 3-foot square sections and allow to penetrate for 5 minutes. Mop up the solution, then rinse thoroughly with clear water. To prevent yellow buildup, wash your floor regularly with detergent or ammonia and water.