kylz i just use my normal washing liquid, the purity sensitive, and her yellow poo dose stain them, but it suns out and thgere back to new again. she has a few that will still have stains untill next wash tho damned melbourne wether and no sun!\
oh and no fab softener. if you think theyu need extra safeway/woolworths have eco store whitner, its like nappysan, but better for them.