Steve Spangler's Geyser Tube
Make a 25 FOOT SODA Geyser! Just add mentos
What started as a classroom science experiment quickly turned into a worldwide internet sensation. Learn how to trigger an enormous geyser by dropping MENTOS chewy mints into a bootle of soda using the 'Geyser Tube'. The Eruption is amazing...and so is the learning if you consider the science behind the fizz.