I was searching on the right concentration to use PBW to remove labels on beer bottles I had collected for homebrewing. I came across this post where the author claims to have a really easy way to remove labels:
I have read the messages from users who recommend soaking the bottles in PBW™ solution and others using WD-40 to dissolve the glue, but I found a really easy way. The labels will soften up and come off by filling up a large basin (about 7 to 9 gallons) of hot water with about 2/3rds to 3/4ths of a cup of Tide laundry detergent (or other brand of strong powdered laundry detergent)
The author then goes on to note:
After you do this step, the bottles must be cleaned as usual with PBW and a bottle brush to remove any trace of the laundry detergent solution.
So let me get this straight? You could have used PBW to remove the labels in the first place but its easier to remove the labels first with laundry detergent then use PBW? Am I missing something?