You can clean the fuel injectors yourself if you want too but you'll need to buy some tools etc to do the job right.
Here's how you clean your own fuel injectors.
Purchase a fuel injector cleaner kit with a PEA cleaning fluid.
Review your vehicle's engine layout to locate the fuel injectors.
Disconnect the fuel pump from the fuel injectors.
Disconnect the pressure regulator vacuum line if you have one.
Connect the cleaning kit to the fuel port.
And then follow the directions on the cleaning kit which should tell you how to clean the dirty and clogged fuel injectors.
Personally though I've thought about doing it myself but I just pay the $80.00 every 3 years and have a professional shop do the job.
My vehicle has a lot of stuff that I have to remove to get to the fuel injectors that it's not worth my time.