Just got back from a festival - knee deep in mud all weekend. DD fell over and covered entire self in it on Friday, so her clothes and the mud dried out completely in the meantime. Cute little 'skort' ( skirt/shorts combo thingy) which I really love now has really ingrained mud stains which haven't come out despite two washes at 30 then 40 degrees, and a 2 hour soak in Vanish in between. Any ideas? (The stains are sort of grey, rather than brown - wondering if there might have been some oil in there somewhere as everything else has come up ok.)