The great thing about a pellet gun is... In most locals its -
legally - not a gun! In many places that means it can be
comped and silenced; serious considerations for, umm... less than optimal "hunting considerations". (e.g. Within city
limits...) It also means the neighbors won't hear the report. (Muy importante, me thinks?)
Instead, they'll think Rocky "slipped" and fell 35' from the upper branches of the local black walnut tree to his untimely
demise. (Just say'n.) That's not to say that your city ordinances don't disallow shooting pellet rifles within city limits.
Better to check and be careful (than be sorry).
If you're looking (and I'm NOT in the industry) a couple of quality PCP (pre-charged pneumatic) brands to consider:
Airforce, Hamerli, and Benjamin. They're not inexpensive. But they're WOW better than the old Daisy or Red Rider
rifles from the 50s.
Your squirrels won't know whats hit'm!
Hotspurious
Walnut Creek, CA