Last rat I tagged was in my garage with a shovel.. Whacked 'im 'ard an' 'a'f 'is guts shot outta 'is mout' and the other 'a'f shot outta 'is arse! Aye!
I threw it out the back window as a gift to the Rat Gods. Found out later the neighbor's cat brought it home to Mommy as a gift while Mommy was sleeping.
A tuba works, at least on mice. I bought an old rotary valve "F" from Germany on ebay. It played really stuffy. I pulled the slides, nothing. So I took the caps off and knocked the valves out. I saw some "steel wool" in the tubing. So I strated pulling it out. It was what was left of a petrified mouse pickled in spit and valve oil, headless. He had crawled down the bell about 50 years ago, and went as far as he could go...couldn't turn around and couldn't back out. For rats, you might lay out some sousaphones...........
Martin Mammoth Sousa
Thompson & Odell Helicon
"C" Serpent
Zoomorphic Jeantet Russian Bassoon
Guichard Bb Ophicleide
and a bunch of other junque