This Mentos Soda Geyser Tube is next level fun! Don’t blink it’s fast and furious! We’ve had a few trials and I will share the secret to the best geyser yet: (1) Use Coke (2) at Room temperature (3) fill the tube full of mentos and (4) ensure the red cap is tightly screwed on for the best pressure. We tried fanta 👎 We tried cold soda 👎 We tried the tube without the red cap 👎 Room temp Coke with the red cap screwed tight with as may mentos as you can fit 👍👍👍👍👍👍 LTKKids LTKmomlife