I worked for a small town on the east side for 7 years. We had a ruger 10-22 fitted with a silencer. We also had a "adult" airgun for shots where the 22 was to dangerous. Killed a lot of yotes on my 2100 to 0500 shift.
I had the chance to do some overnight-nightwatchman shifts during the construction of the Seahawks new place in Renton. There was a guy from the Dept of Agriculture culling beavers and ? One of his guns was a .243 with a silencer. Never heard a shot. He took some pretty big beavers...the geese seemed to thin out too...
Saw a video once in a gun shop. A water district guy in London had the job of killing rabbits that burrowed under their water tanks. He had a special .30 cal air gun hooked up to 3 scuba tanks...POW!!