Cleaning your fuel injectors is important so they do not become clogged. Most automotive manufacturers recommend having them cleaned every 15,000 miles. If your car is newer and has low mileage then you can get away with going longer versus a car that is older with higher mileage. Another factor to consider is the quality of gas you put in your car. This can affect the rate that the injectors build up residue deposits. Using a high octane gas will lengthen the life of the injectors along with the engine.
If you do not want to have your injectors cleaned by a professional mechanic you can add a fuel additive into the gas tank and let it run through the fuel injection system cleaning the injectors. The additives that are available at your local auto parts store are made with jet fuel and fuel detergents that will deteriorate the gummy deposits that have developed on the tip of the injectors. The next option you have for servicing you fuel injector without removing them from the motor is to buy a fuel solvent that is made just for cleaning injectors. The solvent will be stronger than a fuel additive and will reduce or eliminate residue on the injectors.
When using solvent you do not add it to the gas tank, you will spot clean the injectors while they are still attached to the motor. The last option is to take your car to an auto repair shop that specializes in fuel injection cleaning. They will remove the injectors from the car and use a special tool to clean each one. This route is a little more expensive but will get you the best results.