In a serious poor waking up vision, darkness, blurry.... I'd rather not worry about my neighbors in case I don't aim well and miss. So, my revolver is loaded with a couple less likely to hit the neighbors ammo. And, if it hits the perpetrator, it'll still do the damage. By round 3, the heavy hitters come into play. Screw the neighbors as by round 3, I've become more important.
Dog barking is a great deterrent. Gives you time to wake up and flip on the lights. Hopefully the criminal doesn't 1st toss some hot dogs at the hungry mutt. Lots of motion sensing outdoor lights is a plus.
Racking the slide is another deterrent if you don't have deaf criminals.
Laser/flashlight mounted on the weapon is another deterrent if the criminal isn't blind.
Any criminal that steps toward me will be sorry. But, if they turn the other way and run, there is no cause for me to fire.
Maybe the bird shot is a good 1st choice, especially if you live near me. Make sure the buckshot is the 2nd! By the time you rack it a 2nd time, I'll be awake and ducking for cover giving you a clear shot at the criminal and whatever walls the shot goes through.
2 million crimes are prevented yearly by the 'sight' of a weapon. You don't always have to shoot.
When you live in an apt/condo, vs side by side housing, vs the sticks with acreage, you pick an ammo that is appropriate for your homestead.
Hitting the perpetrator is the most important thing to do. So, get to the range field and practice. Make sure you don't hit your neighbors.
A .22lr can save your life if you hit the target.
http://tv.breitbart.com/knife-wielding-home-invader-put-in-hospital-by-80-year-old-john-wayne-fan/