Because you live in Long Island the laws may be differant than the rest of the state for a rifle. I would get a crossman 760 BB gun. Since it is a pump-up(the more you pump it the more power) you can control the power so you are not blowing holes into your wall. It is also a bolt action so if you want you can put multible BBs in the barrel for a spread shot.BBs are cheap! Also do the trap and bait stuff also. You need to attack this problem on many fronts for best results. Be safe! Always look beyond your target so you know what is going to stop the projectile in case you miss your target.
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