It's a long, strange story but one hot summer day I found a large, stray iguana in my garage. I've seen young ones people had as pets but they were never this big.
Figuring it was tame I tried to pick it up to bring it out of there, but it was mean and and hissed, slapped at me with its tail and ran to hide in some stuff, clambering over garden tools, knocking stuff around.
I tried to lure it into a pet carrier with some greens, no good. Later that day I made a quick grab at its tail to pull it out from under some stuff and it turned to snap at my hand, made me let go quick!
The next afternoon I poked around looking for it and it let out another loud hiss.
Having enough of this foolishness I loaded that Bond derringer with 410 birdshot shells (#7) and waited for his next appearance. The suspense was kind of fun. In a day or two he showed himself again, over by the wall trying to blend in.
I got him in one shot from about 5 feet away. The shot rolled him up on two legs then he flipped over upside down. I counted 19 tiny holes but there may have been more. The thing was 59" long nose to tail and weighed about 5 pounds. He had hissed his last.
So this gun rid my garage of a fiendish reptile for me.
I didn't want to do it, but he wouldn't come along peacefully. I'm too old to be wrangling huge angry lizards, so..