Andrew Gatt | Mentos and soda reacting for over 40 seconds @AndrewGatt | Uploaded February 2017 | Updated October 2024, 2 hours ago.
I drilled a small hole in the cap of the soda bottle so that the Mentos reaction would spray extra high and for an extra long time. I also drilled holes in the Mentos so that I could put a string through them and lower them into the soda after replacing the cap.