I have to side with the Mullet.
Been in this biz for 29 years and I haven't seen a cleaning additive that is worth the money.
They all make claims that are as high as the moon but don't seem to really "fix" anything.
If you are experiencing injector problems,
run 5 tanks of premium name brand fuel through your car and you will get better results than 1 tank with "Super Duper Clean-Up Pooper".
If you are having no problems there is nothing to fix.
S.