Maintaining the locks

Maintaining your door lock is luckily very simple to do.  All you do is clean the handle with soapy water once a week to keep dust and dirt from going into your lock.  Then you get a silicone lubricant, like WD-40, and spray it into your lock, before moving your key around to spread the lubricant.  This is also great for your gears, meaning they will last longer.