Oxiclean is great for lots of stuff. I use to clean sprinkler filters and the p traps in all the sinks...eats up the algae on the filter and clears the stinky crud in the p trap.
But to stay on topic, I used to use bleach for labels and MUCH prefer oxiclean, Use it to clean all the brewing stuff( with the exception of the aluminum pot) before soaking in starsan.
One caveat, if you keep the bottles in the cleaner too long, or perhaps use too uch oxiclean per gallon ( yup.. I forgot and left them in the bucket 2 weeks) they might get a hazy look to them, but a soaking in the acidic starsan will remedy that.