How to Use a Microwave Sanitizer for Menstrual Cups

Quick Answer

To sanitize your menstrual cup in the microwave, place it in a dedicated microwave sterilizer with water, heat for the recommended time, then let it cool before removing. Always use a cup-safe container and never microwave the cup alone.

Step-by-Step Microwave Sanitizing

1. Fill the sterilizer with water: Add enough water to cover the cup completely, but do not overfill—leave space for boiling. Check the container's instructions for the exact water level. Overfilling can cause water to spill in the microwave, so measure carefully.
2. Place the cup inside: Ensure the cup is fully submerged and not touching the sides of the container. If your cup has a stem, position it so it doesn't stick out of the water. A floating cup won't sanitize evenly—press it down if needed.
3. Microwave on high for the recommended time: Heat for 3 to 5 minutes, depending on your microwave's wattage. Start with the shortest time and check if the water is boiling; if not, add 30-second increments. Boiling water means it's working—if the water isn't boiling, increase time in small steps.
4. Let it cool before removing: Allow the container to sit in the microwave for several minutes until the water is cool enough to handle. Use oven mitts to remove it, as the container will be hot. Never pour out hot water immediately—steam can cause burns.
5. Rinse and dry the cup: After cooling, rinse the cup with clean water to remove any residue, then let it air dry completely before storing. Your cup is now ready for use. Make sure the cup is completely dry to prevent bacterial growth during storage.

Products That Help

• Foldable Microwave Menstrual Cup Sterilizer: The Foldable Microwave Menstrual Cup Sterilizer uses boiling water in the microwave to sanitize your cup and fits all MeLuna cup sizes, including XL. You don't need to guess whether your cup will fit—this container works with any MeLuna cup and collapses for easy storage between uses.