Since you live in Australia, I am not familar with your products. Do you have gentle detergents that you use on baby clothes? I would use something like that and check to see if it comes clean...you may need to wash it twice as these are gentle to the fabric but sometimes not as effective on the "gungys" :wink:
Did you prewash your fabrics? If so, you could use the same laundry detergent as then. :D