Losing the house or car keys is never funny. You can't enter your vehicle or your house anymore, so you need to find a way to solve the problem very fast. In addition, even if you have spare keys, you have to replace your door locks, as you can never know who has found your keys and might enter your house or steal your car.
When you need door locks replacement, you have to make sure the new lock fits into position perfectly. If you don't know what particular model you need, it's best to remove the old lock and take it to the shops with you. Like this, the shop assistant can help you find the exact model you need.
If your locks are basic, you can replace them yourself. The only thing to keep in mind is that you should screw them firmly into position, so that they can't move. If they are wobbly, you may have problems using your key, so you risk of not being able to unlock your door when you least expect it.
If you have modern locks that feature security elements, you may need to help of a professional locksmith to help you replace them. Besides, you may not even be able to remove them, so you are going to need a technician do it for you. In such situations, you should probably contact the manufacturer of your lock and ask whether they offer such replacement services. Most of them do, even if not directly, but via third party companies. This is also a good solution ,as these companies have staff that's trained to install, repair and replace locks just like yours.
When thinking to replace your locks because you want a more secure solution, it's a good idea to do your own research in order to see what's available. Once you've got some information about your options, you can go ahead and get in touch with a reliable locksmith or with a contractor to help you choose the best model for your specific situation. If you live in an area with high burglary rate, you can never be too safe, so it's best to invest in a solid door and in modern locks with multiple security features that make it very hard for thieves to unlock them or to replicate their keys. This is an investment in your personal safety, so consider doing it sooner rather than later.