Have you ever noticed some toilets get more moldy than others? Even if you clean your toilet weekly, that black mold in your toilet tank keeps coming back!

What Causes Black Mold in Toilet Bowl?

Mold spores thrive in dark, damp places so it’s only natural to find mold in your toilet. However, some toilets can become moldier than others depending on your water or if you have calcium deposits built up in your toilet.

I’ve even heard that if your body has higher glucose levels from diabetes, your excrement can cause additional toilet mold!