Often cleaning cgd is like trying to clean porch paint. We tried about every type of hwe to clean it over the years.
One trial run of cleaning an office cgd using a cimex with releasit and I was sold on the spot. It simply made the carpet look so much better than hwe.
It didn't matter how much I rinsed out of the carpet, it did not look nearly as good as encap. And looks for cgd is what the client wants. Not a drastic of much dirt we removed but the carpet still looking dirty.