When's the last time you've changed the locks on your doors? Whether you've just moved into an apartment or you've lived in your house for years, it's a good idea to get into the habit of changing your locks from time to time. It's hard to know how many keys could be floating around to your home. Sure, you could hire a locksmith, but why not save a little bit of money and try to do it yourself?
There are a few ways to approach this.