How Do I Clean Black Mold in Shower Silicone? Fill spray bottle 2/3 full of white vinegar and add 2 tsp. of baking soda. Allow the fizzing to die down before installing the sprayer top. Spray the shower silicone and mold and allow the mixture to set for about an hour. This will kill the mold spores and keep them from continuing to grow and spread. Use an old toothbrush. Scrub all of the silicone and rinse it with very hot water.
4 ounces blue Dawn dishsoap (ONLY use the original blue Dawn) 12 ounces plain white vinegar Mix it all up in a spray bottle. Once per week, spray your entire shower, bathtub, and fixtures with this stuff. Wait 1-2 hours then rinse. That's right - no scrubbing. Your entire shower and tub will be sparkly clean and shiny - and your grout will stay mildew free!
Fill the empty spray bottle with the white vinegar and don’t dilute. Liberally spray all the affected areas. When the vinegar has had time to set, dampen your scrubbing sponge with hot water and load it with baking soda. I give the mildew one last taste of vinegar, and then scrub away.