Have managed to get rust marks on a bath towel (from soaking cooker parts in bath!) Have tried soaking in Vanish but that didn't work - would be grateful for any ideas please.
Stain Devils do a rust stain remover for fabrics. Try your local hardware shop. I used to use oxalic acid powder mixed with a little water. That works fine, but most chemists don't stock it any more. (Poisonous!)