I also use those cooler bottles for conditioning. I reckon they're fine, all they've held (until we get them) is water.
[quote:1pwmd2x7]Has anyone tried using a strong caustic solution and leaving it in the bucket for a few hours. Casutic generally kills everything including those foolish to abuse it. It also does a spanking job of cleaning corrosive safe equipment good enough for big pharma. [/quote:1pwmd2x7]I believe it's very effective but as you say it's not pleasant stuff to have splashing around. It'll need a damn good rinse too.