I started a very similar thread here a couple months ago, also looking for "BB gun" advice. I was told that if i was serious about eradicating the little vermin,to use poison, but i mostly wanted an excuse to get that high(er) end pellet rifle i always wanted. In fact, it was the Benjamin/Sheridan that i was first interested in.But a little research sent me to the RWS 34, and what a bad-ass little rifle it turned out to be.It doesn't require multiple pumps, but a single break barrel cocking action. WAY better. PyarmydAir has them for only about $50 more than the Benjamin. Here's a link.....
http://www.pyramydair.com/p/rws-34-panther-air-rifle.shtml
While this gun was still in transit, further research led me to the considerably more expensive Beeman R9 Goldfinger,and i sold the RWS to my brother before it had even arrived.But the second we pulled it out of the box,i realized i didn't need to have upgraded. It FEELS like German quality !! It ain't no kids toy, this is a RIFLE !! Both these rifles will blow through both sides of pressurized steel cans ( WD-40,furniure polish,etc.etc.) from 70 yards. PVC pipe within the same distance....blasts it to pieces !!! ( The RWS is .22,my R9 is .20 cal. )
I've had more fun shooting this silly pellet rifle than i ever would have imagined. I haven't shot a "real" gun a single time since i got it, and have ordered ammo three times already.
I live in a semi-rural subdivision, and i probably could have gotten away with a low velocity .22,but the fact would remain, i'd still be shooting a firearm.This way ...." hey relax....it's only a BB gun "!! ( i've had to do it once already).
I've been telling all my gun owning buddies " before you buy another "real" gun, you gotta get one of these". And stock upon ammo, even loading one shot at a time, you;ll be amazed at how fast they go.