This is a general guide for menstrual cup care, but please review specific instructions from the particular cup manufacturer.
Menstrual cups can be washed with water when emptied throughout the day. Washing with warm water can help remove clots and clear holes to ensure a good suction when reinserting.
Menstrual cups can be cleaned between each cycle through boiling or washing with very mild, unscented water-based soap.
At the end of your cycle, boil the cup in an open pot for 5 minutes, paying careful attention not to forget the cup, as extended exposure to hot water degrades the cup and burning can make it unusable. Let the cup dry, then place in a pouch or breathable fabric for your next cycle.
When washing the cup, be sure to use a very mild, unscented, oil-free soap and warm water. Be sure to rinse the cup thoroughly to remove any soap residue. You can also use a toothpick to clean cup holes, and discard them after use. Let the cup dry, then place in a pouch or breathable fabric for your next cycle.