What would you do if you came home from school or work which ever one and had some random person in your yard and the random person charged at you and tried to bite you but you have no weapon but your hands?
make a dash for my house. i always open the garage door before even leaving the car, while i do carry weapons in my car i think i got a better chance when i'm in my house. so I would sprint to the garage, open that connecting door into my house, and slam it shut, lock it. then complying with california law, call the cops, etc, etc. I can't just shoot him, in Cali that's murder.
in the meanwhile i'll probably watch some TV.