White vinegar, Chinook IPA, Hetch Hetchy, and bleach. I have no idea what I am doing. on Flickr.

mirrored image from https://66.media.tumblr.com/5927e90e18825a1596a4d5108c081a8e/tumblr_msewyjOvpO1qzoybuo1_640.jpg without alt text, sorry