What Is autodumping?

About

Autodumping, also known as self-emptying, is a unique characteristic of menstrual discs. It occurs when your pelvic floor muscles contract or relax (usually while you are on the toilet or during penetrative sex), causing the disc’s rim to slip slightly from behind the pubic bone to release fluid. Here is how it works

Muscle movement: Bearing down during urination or a bowel movement puts pressure on the disc, causing it to temporarily slip out of place.
Fluid release: A portion of the collected fluid flows out into the toilet. This reduces the amount of fluid the disc is holding without you having to remove it.
Repositioning: Once your muscles relax, the disc often pops back into place. However, you should always check the fit with a clean finger or a quick Kegel exercise to ensure it’s secure before leaving the restroom.

Unlike the cup, which uses suction, the disc is held in place by your anatomy. This allows for autodumping, which can be a major convenience or a slight learning curve, depending on your body.

Benefits and Drawbacks

While autodumping is a feature for some, it can feel like a drawback for others.

Benefits: Emptying some fluid midday lets you last longer on heavy days and manage a heavy flow without needing to remove the disc in a public stall, and it works with your body’s muscle movements rather than fighting against them.
Drawbacks: If the disc doesn't pop back into place, you may experience spotting in your underwear. It may not happen every time, which can be frustrating for those who want a set routine, and if not emptied before penetrative sex, a full disc might "dump" due to muscle activity.

How to manage autodumping

Retuck After Bathroom Use: This is the most important step. Always use a clean finger to ensure the rim is tucked back behind the pubic bone. Alternatively, do 1-2 Kegel exercises (contracting and releasing pelvic muscles) to help the disc pop back into place.
Adjust Your Posture: Using a small stool to prop up your feet can help relax your pelvic muscles and give you more control over the "dump." Avoid bearing down excessively during bowel movements, as this increases the chance of autodumping.
Hold the Disc: If you don't want the disc to empty during a bowel movement, gently hold the rim in place with a clean finger.
Empty Before Sex: To ensure a mess-free experience, manually empty the disc before penetrative sex.
Backup Protection: On heavier flow days, wear period underwear or a liner to catch any small droplets that might remain after an autodump.
Clean Regularly: Autodumping is not a substitute for proper cleaning. Remove, rinse, and reinsert the disc at least every 12 hours, and boil it for 3-5 minutes between cycles to sanitize.

What if it doesn't happen?

Not everyone experiences autodumping, and there is no need to force it. Your pelvic floor strength and the position of your cervix determine how the disc behaves. If yours stays perfectly tucked no matter what, that’s great. It just means you’ll empty it manually as usual. Autodumping is not essential for the disc to work effectively. Just the disc is correctly inserted to prevent leaks unrelated to autodumping.

Still have questions?

If autodumping feels unmanageable or you are unsure about your fit, we are here to help. Consult your gynecologist for a better understanding of your unique anatomy, or reach out to our support team at support@allmatters.com for personalized tips. Alternatively, visit the AllMatters How to Use guide or explore their FAQs at allmatters.com for further information.