92% alcohol, found in lots of places will clear up your GVG in no time. You can collect the alcohol that you rinse through there and evaporate it in a well ventilated area. You should find a bunch of DMT crystals (may look dirty if there was lots of pyrolized gunk in there, but that's ok) to scrape up. Once they no longer smell like alcohol, they're good to go.
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb