If you read my ealier post "Acid Reaction" about an experiment involving The Works Toilet Bowl Cleaner and Aluminum Foil. Since I now know what I make when I do something like that, I'm gunna start a search for alternative reactions. I know of ONE kinda of alternative. Which is Baking Soda and Vinegar. I did that once, but if didn't creat enough pressure, for the Bottle to burst - we had to throw it 38 feet in the air. I know for a fact that nothing dangerous is produced when this is done - nor is it as illegal as Dry Ice and Water, or The Works and Aluminum. It's very cost inneffective and I believe my method may be flawed. Procedure: I fill the bottle with Baking Soda until it reaches the bottom of the label. Then, taking a vegatable bag from Meijer I stuff it into the bottle. I then fill the bag with vinager. Very ineffecient, no? So, I came here to find assistance. Alls I need to know, two chemicals that when put togather will create a gas. Making 300 or more PSI. Or atleast 150. Thank you all!