Been meaning to order some caprivite, thanks for the reminder ?
Have a good sniff at milk containers, i thought I was washing mine well till I stuck my nose in, i used to chill milk by putting it straight in freezer, but was concerned at effect of warm stuff going in freezer, i now have some of these blue freezer blocks you put in cool boxes, stand the milk container in bucket of cold water and put the freezer blocks in the water, works well.
I also remember reading of someone putting freezer blocks in bottom of milking bucket, would have to sterilised though?