This causes a pooling effect.
Cause of discolored bath mats.
How to clean a moldy bath mat.
Soap scum hard water rust and grime all contribute to leave discolorations on your bathtub.
The most likely culprit behind your stained shower mat is a bacteria called serratia marcescens.
This bacteria is fairly common in the environment and is not harmful but is tough to get rid of.
Prevention and maintenance are key.
In the bathtub combine 1 cup of bleach per 5 gallons of water then let the bath mat soak for a couple of hours before scrubbing it with a scrub brush.
Serratia loves moisture and will thrive in areas where there is a lot of standing water or where moisture can be easily trapped like under a mat.
Some of these you can wipe away with no more than a damp cloth if caught right away but over time.
Another reason for rust appearing around outlet is that water is unable to drain away because the outlet is sometimes higher than the bathtub surface.
If you installed tile bathroom floors that have recently fallen victim to discoloration you may be curious about how to properly go about removing it.
Fortunately you can easily remove any floor based discoloration with several household cleaning products and a little bit of elbow grease.