If I was on my way out and didn't care, I would have sent this e-mail back to him:
Thanks for letting me know about the candy wrappers in the stairwell. The staff has apparently all turned to unusual amounts of comfort food to help them endure this craptastic season that is upon us. I'll take care of it.
While we're talking about trash, I was walking around the field and noticed some trash that you left here. The trash keeps moving, but I think you can take care of it. It's been here awhile and I'm surprised you haven't noticed yet...so I'm just letting you know. Matt Cassel, Tyson Jackson, Jake O'Connell, and about 65 security officers keep floating around the facility and I think all of us would appreciate it when you can finally pick them up and throw them away.
Glad to be of service, a-hole.