Really really tiny black dot on cup. Could it be mold? Should I worry about it? : r/menstrualcups

How to avoid discoloration of your menstrual cup

Menstrual Cup Dangers - The Hidden Dangers of Menstrual Cups

Stanley cup: How to prevent black mold in your quencher – NBC Los Angeles

Moldy sippy cups frighten parents

What Blood Clots During Your Period Mean - Causes of Period Clots

Menstrual Cups and Toxic Shock

Mold in kids' sippy cups and toys: How dangerous is it and what can you do about it?

Dark Stains Inside Cup? : r/YetiCoolers

7 Common Reasons Menstrual Cups Leak (& How To Fix Them)

DOT Cup! - A Menstrual Cup That Gives Back! - The Walking Mermaid

Never use bleach to treat, clean or kill mold? Read why!

Tiny black spots on mug bought 3 days ago : r/Hydroflask

Non-Toxic Sippy Cup Guide, Best Sippy Cup