how is simple green for cleaning glass pipes?

picked up a bottle for car cleaning and read the tag .. wanted to see how it did against resin.. so i diluted it down 1 cup simple green : 4 cups water and filled up the lower chamber of my pipe. it fills that and the percolator up so i'm letting it soak for a few hours then will thoroughly rinse it out with warm/hot water.

the downstem/bowl will be cleaned with formula 420 and a soak in very hot water to loosen up that last bit of resin and then hit it with some more cleaner and perfect clean glass.

will snap some pics in a bit.