Proper cleaning is fundamental to using the FLEX Cup.
When you first purchase your cup, be sure to wash the cup with soap and water prior to insertion.
Once you're ready to remove your cup, the first thing you'll want to do is wash your hands. Fully remove the ReleaseRing™ from the seal by pulling it out through the center of the cup.
Using a fragrance-free, oil-free soap, wash all surfaces of the cup thoroughly for at least 20 seconds. Then simply rethread the release ring through the hole and reinsert or store in the carrying bag between uses.
Periodically, boil the cup in a full pot of water for 10 minutes, making sure the cup does not stick to the bottom or sides of the pot.