you can bet your ass id shoot. i would not shoot to kill or even hit, but however i would blast away to scare the **** outta them. take the beads out and let them see your aiming at them and fire away. they will never be back. now..if they are were trying to come inside then thats when id aim for the knees, if they come inside w/ a gun..shoot to kill, no questions asked.most places have laws about shooting in city limits but there are also tresspassing and damage to property laws. simply shoot one time and if you can tell them if they run they will be shot, then call the cops..you should be fine while you hold them there