Read a little about locks before it is advisable to call . Learn what a Primus lock cylinder is. Inquire as to the safety of household locking elements. Consider deadbolt locks for added safety, but these too could be bumped. Bumping is process by which a special key's inserted almost fully in the lock. The lock is then bumped producing person inserting the secret is gently turning the key point. This will work on most door locks. It's not at all the type of lock a lot fewer prefer to insure that the possessions feel at ease.