I did some old raleigh shopper white walls a couple of years ago, they had been on my DP since 95, stuck in the shed, then removed and lived in the garden for best part of a year waiting to be binned, then I needed some, so I scrubbed them with jif and put them in tesco stripey bleach and water 50/50 in a bucket for a week. this is how they came out, I was stunned, they were minging before!!