Under normal circumstances you can use vinegar or another type of acidic liquid to kill mold in your shower or bathroom. But vinegar won't remove stains, so you'll need to use chlorine bleach to remove them. Chlorine bleach will sterilize any surface and remove mold, mildew, fungus, bacteria AND viruses.How do you remove mold from shower Grout?
Follow our expert tips on how to clean the grout in your shower: Assemble your tools. Remove dust. Mix: Create a bleach solution with one part bleach to 10 parts water in a spray bottle. Spray: Soak the mold and mildew on the shower floor and tiled walls with the solution. Wait: Let the solution sit for a minimum of five minutes.