Sorry but the one thing that can't be gotten out of buckets to use them for brewing is pickles....I don't think you'll find one success story in all these threads. The pickling brine penertrates way too deep into the plastic.
https://www.homebrewtalk.com/f11/pickle-bucket-173350/
https://www.homebrewtalk.com/f11/pickle-buckets-144485/?highlight=pickle
https://www.homebrewtalk.com/f11/pickle-taste-bourbon-stout-132670/?highlight=pickle
https://www.homebrewtalk.com/f11/pickle-bucket-grist-104109/?highlight=pickle
https://www.homebrewtalk.com/f11/pickle-bucket-85010/?highlight=pickle
As all the above threads have shown, even multiple soakings of oxyclean won't work....If it were that easy there wouldn't be so many threads.
As much as I am all for scrounging, recycling and repurposing, and finding free stuff for our hobby. I have to say pickle buckets really just need to be passed by. Get yourself some frosting buckets, or even soy sauce buckets from the local chinese takeaway, but not anything with vinegar, it's an acid and will penetrate the bucket.
Look for frosting or soy sauce buckets, or go get whhite hdpe buckets from lowes or had....
You'll probably have a better shot with the ascorbic acid one. But I would pitch the pickle bucket.
