I just use whatever washing powder my wife has at the time, quite liberally and it has worked awesome. I agree that it is not as good as the no-toil cleaner (/Oxy) but still gets them really clean
also along the lines of using gas, also don't go too hot on the wash, i had a filter fall apart when i had the water too hot, melted the glue at the seams
On a side note, those of you who use petrol/kerosene etc, what do you do with the dirty fuel afterwards? That is why i started using no-toil, can just ditch it in the sink without having to worry about Greta giving me stink-eye (at least until she discovers the filter is for an oil burner 2-stroke !!)
There is also a belief that no-toil alows water through the filter easier than oil-based filter oils as they have hydrophobic properties, but when i drown a bike it is normally like the titanic