Oh, no, they don't get the sandwich! They just have to get to it. Without someone noticing. You know, like that game? With the...stop and the go. And you try to...turn around? And if you see someone move they're out.

I had to get them to come so I used food. They don't come closer while someone's watching, even if you tell them to come get the sandwich. They only go when no one's looking.