Am I right in thinking that Roto brite II and Surround are encap-only? Am I making too much of the difference - is shampooing pretty much dead and buried for most applications??
They are polymer based encapsulators.
Rotobrite 2 is acidic with Hydrogen Peroxide to boost.
Although I dont know for sure I would imagine Surround is pH9 and as mentioned can be boosted with sodium percarbonate.
Prochem Fibre Shampoo & Oxibrite would give an equivalent. All be it not with quite the same performance.
The only thing I dont like about non encapsulating products is the rate of absorbtion of bonnets ist enough to avoid spreading soil.
I have used microsplitters and the like but find after about 2-3 periodics we needed to extract again. With encaps we dont.