Recycled containers question.
I have access to some cantianers at work, they are 5gal containers. I was thinking of using them to grow hot peppers and eggplanrs. The only issue is they contained some chemicals in them. My question is can they be cleaned with anything to make them usable? I ask, cus we throw tons of them away, and containers can get a bit pricey. If i cant use them so be it, but free is nice..lol, ty for any advice. I do have some regular 5gal painters buckets i use as well as totes (30gal with holes drilled in them) But like I said free would be nice.