Does will definitely respond to fawn in distress bawling. I've done it many times. When you use the can, just make sure to tip it over quickly. A slow bleat is more of a danger call, according to what I learned from a whitetail "expert". I tested this theory after I had heard about it. A long bleat done with the can has sent deer packing on several occasions, so I'm a believer.
I was hunting on the ground many years ago in December (pre second rut) and rattled in a brute of a buck from a couple hundred yards away. He was missing his right side because of an injury. He had a healed over lump along his back on the opposite side. He would have been a heavy 10, probably pushing 140. I think it really helps to tear up the brush and pound the ground while you do. He came trotting in and was about 6 feet away from me at one point. Problem was that he didn't stop until there was a thick bush between us. He definitely had the sound source location pegged. My heart was pounding out of my ears, but he was close enough I could hear him breathing and licking his nose. Never got a shot at him, because my friend was hunting about 150 yards away and had shot a button buck just then. When that deer crashed in the woods, it spooked my deer.
I think timing is everything when you call deer though. Do it at the wrong time and you may as well be throwing rocks at them.