How hard is this, don't leave your tools, lunch, trash, condoms, or anything else in the airplane. If you brought it in, f-ing bring it out.
Between Boeing's new touchy feely management style where you can't tell at anyone for fear of hurting their feelings and the worthless union protecting those incompetents that can't f-ing clean up after themselves, we can't stop shooting ourselves in the foot.
Take some damn pride in what you do!!!
Maybe we should have a zero tolerance policy. Each airplane that has something found, one of the crew gets fired. No questions asked. It will reduce the layoffs and maybe impress our customer.
https://www.popularmechanics.com/military/aviation/a32885300/kc-46a-garbage/