I still use it. But I find the liquid performs better than the powder. The Extreme is AMAZING on olefin.
The regular is AMAZING on cotton upholstery.
Maybe the dirt is different here?
I don't find it expensive. I pay $26 CAD per gallon, and use at 2oz per gallon with no rinse product. What is cheaper than that?
I use their spot program as well.
For me, the hypoallergenic market is huge.
Eating brass? I find it hard to believe you would need to replace a brass fitting from using Procyon before you would need to replace it anyway.
I use DFC-105 for wool, and am currently experimenting with Masterblend's Soapfree.
I would like to try Prolon, but I would have to special order it in, and unless I hear something else to convince me it's worth the hassle, I won't.