46+ Black Mold In Shower. And depending on which variety it is, it could be dangerous. When you see mold growing, don't ignore it, get rid of it.
Some black mold symptoms can actually be really serious. Black mold exposure and black mold poisoning can cause a wide range of health problems. Black mold needs abundant moisture, significant food sources and a long time to develop.
The reason black mold grows on your shower caulk is that your caulk often retains water and soap scum, which contains cellulose.
Better ventilation in your shower or a heat lamp might help keep it dry. Life happens and cleaning the shower ends up fairly low on most people's list. If after spraying with clr and scrubbing the surface and rinsing its clear that the then use any anti mold or mold killing product from home depot. In its natural state, grout is highly porous and will absorb enough moisture to propagate mold growth.