How do I keep Adolf Hitler's ghost out of my plumbing?

that's a tough one. Liquid plumber isn't going to do the trick unless you have it blessed by both a Catholic priest and a Rabbi before you dump it in. Roto Rooter won't get him out unless they have the Nazi attachment, so you'd have to check with the local office to see what they have. Or you could just dump a bunch of blended latkes into your drain. Hitler hated latkes.