How to Remove Stains From Shower Floor Grout
- 1). Pour vinegar onto the shower floor, flooding the grout lines around the area of the stain. Let sit for two minutes.
- 2). Scrub the shower floor grout with a scrub brush. Scrub thin grout lines with a toothbrush to more easily get inside the grout lines.
- 3). Turn on the shower, and allow hot water to rinse the shower floor, washing the vinegar and lifted stain residue down your shower drain.