Actually, Simple Green is non toxic, you can drink it(not recommended) and if you rince the pipe thoroughly, it's perfectly safe. When I was a diesel mechanic, the district rep for the company that makes it came to my shop to do a demo, he drank 4 ounces of it, and other than a horrific taste, he suffered no ill effects.

Mouthwash will do the trick too, although I'm not sure if an alcohol based cleaner is the safest thing to microwave, since when it's heated the alcohol becomes very flammible.
shogun Reviewed by shogun on . pipe cleaning? i was thinking about cleaning my pipe. i read on here another time that you put it in boiling water. but a friend of mine told me that it depends on how thick the glass is. how should i go about cleaning watson my pipe? or just keep it how it is Rating: 5