If however the mildew creeps behind the caulk you may have to replace it.
How to remove mold from shower door seal.
Whatever product you use simply spray the silicone mold from the shower and let the mixture sit for about an hour.
How to clean the rubber seal around shower doors.
Vinegar and water pour 1 2 cup hot tap water and 1 2 cup distilled white vinegar into a spray bottle.
Dip the toothbrush in the bucket and scrub the seal.
Spray the vinegar solution onto the shower door seal.
Mix 1 cup of bleach with 1 gallon of hot water in a bucket or use a commercial cleaner.
Once it gets back there or into the grout anywhere else in the bathroom it s very hard to get rid of.
If not reapply and wait another hour.
Just spray or wipe it on you don t need to scrub.
One option is to put 2 3 white vinegar and 2 teaspoons of baking soda in a spray bottle.
This will kill the mold spores and prevent them from growing and spreading.
Spot check an area to see if the mold on shower caulking is gone.
Wet an old soft toothbrush with the vinegar.
Add a generous squirt of dishwashing.
For tough mold and mildew spots let it sit for 15 minutes.
Both will kill the mold.
If you have a bigger mold problem you might need to repeat the application a couple of times.