Hi there

Like any oil stain, it will respond to detergent - but unless it's a bespoke product, the strength of the oil and the dirst ingrained in it, will probably be too much for most detergents.

I've found this product which looks extremely effective and seems to be available for ordinary general public use: http://www.blue-diamond.co.uk/products/Biozyme/biozyme.html

Hope this helps.