A bottle of injector cleaner once or maybe twice a year is a good maintenance thing to do.
But get a proven good one, like Chevron Techron in the strongest variety.
It will clean the pump, lines, injectors, valves, and combustion chamber.
I have no doubt as to the value of good injector cleaners run through the gas tank.
But it is not for every tank. Roughly 10,000 miles is about right.