I used to trap teammates who would camp in corners with decoy care packages back in MW3.
I regularly killed camping teammates with real and decoy care packages in MW3.
We're losing a very close game, and you're in this same damn corner each and every time with your portable radar and your 20 kills and 5 deaths? Sure, I'll end that streak no problemo sir! Just keep laying there..... Best was when I did it to a camper on my team who was 1-2 kills from a MOAB in a game we were losing 170-90. He just kept camping his same corner, FORCING his team to be spawn trapped. I joined late, got the decoy care package, and popped it right behind him :)