Tanzie, that is interesting and well worth flagging up to any giteurs this summer. Is that just a local issue or the same throughout Francophone Europe? I am alarmed.
We use Persil non-bio, topped up with some Nappisan for pale washes and also deploy household soap beforehand for stubborn stains.
I found Fairy hopeless, lovely scent apart. Can I ask Fairy fans if they live in hard or soft water areas? Our water is really hard and I wonder if that is a factor.