Bathroom floor- vinyl

i don't use the measure just my assume first water spray on the floor then use soda baking shake spread (light) then spray real juice lemon it would become bubble to foam to allow set for 10 minutes then brush then mop it few times make sure no soda baking on the floor.
This floor vinyl black dirt inside won't remove for 25 years. I did remove for house cleaning. They were shocked and happy it look like new floor!
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