i dont know what kind of hood you live in but i would not feel like my house is in danger of being robbed, because robbers dont test the lock every night.
and OP, this sounds so scary, exactly the kind of thing that would scare me. i would never try this. but why not just let your candle go out and put down the ring of salt? then you get to chill in one place for the whole time instead of getting freaked out the whole night