I'm sure we've all heard of The Works Toilet Bowl Cleaner (Hydrochloric Acid is what the guy on the phone said, but the bottle said Hydrogen Chloride, you guys should know. :) ) and Aluminum. I know that the Acid has a negative or positive Hydrogen ion, and that the aluminum liberates the ion. I think. I tried this with a 2 liter bottle and I'd like to know what the bi-products are. I noticed a smoke that stunk like hell and a green liquid. I also notice the asphault had cracked. What was the liquid and how/why did the pavement crack? ** Oh, and rest assured I'm not doing this again, I got a HUGE wiff of The Works throught my cone mask (Left is sitting too close) and it sucks. Not to mention the 10 year jail sentence. I don't like hurting my woods either. ** Thanks!