down the toilet
(idiomatic) Into a state of collapse or failure: wasted, squandered; irretrievable.
Well, their reputation is down the toilet.
Maybe humans are just the pet alligators that God flushed down the toilet. Chuck Palahniuk
We are now in the 21st century: all books, including the Koran, should be fair game for flushing down the toilet without fear of violent reprisal. Sam Harris
Whenever I hear a campaign talk about a need to energize the base, that's a campaign that's going down the toilet. It's a pretty good indication that they're not eating up any territory, they can't get anybody in the center to support them, they're getting shelled back into their own bunker. James Carville