A pellet/bb gun will take care of it all very quietly and discretly. You can get a European springer single shot (don't have to buy air or C02 cartridges) that are great for hunting and eliminating small pests and varmits. Pump ups work too then you can control the power but can be tiring or time consuming pumping up the air or PCP air but those can be costly to maintain. These items can be backyard friendly where your neighbors won't know. You wouldn't have to worry as much as a firearm of doing damage and going through everything. Alot less liability.Lead pellets, as in a shotgun? Or a pellet gun? I have a 12 gauge but I'm too close to my neighbors. Then someone gave me a pellet gun and I'm like why tf do I need this and gave it to my dad. Kicking myself for that.