Remember, for any chemical cleaner (not sanitizer of course) effectiveness is the product of three factors: concentration, time, and temperature. Reducing one element in the triangle can be compensated by increasing one or both of the others. I rarely use ABW, PBW or the like at recommended strength. I mix hot, and soak as long as it takes to get stuff clean. The only place I
might follow the directions, just to be safe, is in draught lines or other CIP applications where I can't see what's going on. Don't waste your money. And if it doesn't seem to be doing the job, you can always add another scoop later.
Steve, experiment to see how much works for you...start small and work up if you need to. I use maybe 3 scoops for one of my 5 gal. buckets.
How much is that ounce wise? I got several 2 ounce packets at homebrewcon.
I just checked, the scoop that comes with ABW is 1 Tbs/0.5 oz.