Ok, Hip_Domestics, I come with another cleaning question.
My husband and I use steel flasks to keep tea with milk hot while we are travelling, walking, or attending an event. Recently, we both forgot to empty the flasks and when I did I discovered we had made cottage cheese (ew). I cleaned out the flasks (or so I had thought) with a combination of bicarbonate of soda and plain vinegar, but the inside still looks like it has a "film" and my husband said the tea tasted funny the last time he used his.
I can't fit my hand inside to scrub, nor do I have anything with a long enough handle to reach inside. I have bottle cleaners, but even those don't reach all the way down to the bottom of the 1L flasks.
Help? I know I can get replacements at Wilko for cheap, but I'd like to preserve these if possible.
Reminder: I am in the UK, so some US cleaning products will be unavailable.
Thanks for your help!
(even better is if I can get them cleaned by Saturday, as we're off to a Garden Rail show)
ETA - left it overnight, no luck. Tried sticking a cloth on the end of a spoon to get at the bottom, no luck. Tried shaking it with rice, no luck. Having my husband pick up denture cleaning tablets on his way home from work, but I think we might have to break down and get new flasks :(
ETA2 -
jackmaybenimble suggested denture cleaner below. Worked like a charm!! Thanks!!