If you must do it you can learn to examine the lock and approach the task properly with the right equipment for the job.
How to drill a deadbolt door lock.
If you lose the key and can not pick the deadbolt than you can drill the deadbolt to break the tumbler pins and turn the lock using an object.
Smear a little lipstick on the end of the deadbolt close the door and turn the lock.
This video was taken as part of a comprehensive comparison of the best residential locks in the us.
Good to know to prevent splintering in a wood door drill halfway through one side and then flip the door and drill through the other side.
When you open the door the position of the bolt will be evident on the jamb.
Use a 7 8 spade bit to drill two overlapping holes in the doorframe for the deadbolt.
Close the door and turn the deadbolt several times to mark the doorframe.
Inside every deadbolt lock are a number of tumbler pins that lock and unlock the bolt.
Lock drilling is a last resort approach to gaining entry to locks that cannot be opened by other means.
Mortise the area around the hole so the strike plate will fit flush with the doorframe.
Drilling a deadbolt lock should be your last option because it will destroy the lock.
Drilling a lock will destroy the locking plug but should leave the mechanism in working order.
If you re in a situation where you cannot or do not want to use a drill to install your lock there are a couple ways of installing an interior door lock without a drill.
Use a 2 1 8 inch hole saw to drill the hole for the deadbolt lock assembly.