Basically what you want to do is wave the SuperThrive above the plant. Don't pour any on it, just wave it around the plants. That will be as effective as using the SuperThrive itself but at least you can keep using the bottle forever.
SuperThrive has not been proven to do anything for plants. There is not one study published in any peer reviewed scientific journal that supports even one of their claims. Which are a bid odd to begin with.
Look at the back of the package:
What exactly does it mean by "extra life." And what the FUCK does it mean by, "SuperThrive saves plants from waiting to make many life-process complexes, carbon-hydrogen-oxygen groups." It's fucking non-sense is what it is.
Oh, and look at #6 and #7, notice how they have a question mark after them? That's because they aren't SAYING you'll get two year's growth in one or even that you'll get earlier, heavier bearing things which it doesn't mention. It's actually asking YOU if it can do that!
You use it if you want; lots of people bought snake oil too.