If you prefer to use your .22, these are very quiet, quieter in fact than my pellet gun. I use them here (houses on each side of me) to control the squirrel population that decimates my pecans. Neighbors never hear a thing.
They're also great for indoor practice. One thick phone book is enough for a backstop, two or three just to be extra safe. Note: They will not cycle a semiauto.
Of no use against blue helmets, unless you can get within a few yards...