When I used the O2 system, I did notice how much effort to clean the measuring cups after use,, now with other products I notice they clean up much easier.
i tried the Procyon extreme carpet cleaner,, on a repeat customer, usually have to use a citrus additive for the pet spots where their dogs sleep,, first thing I noticed and after many years of using products with smells,, there is none,, had to keep checking my hydro force to make sure it was drawing! Even with the Hoss it didn't clean up as well,, (in those areas). Rest of carpets wasn't so bad ,, had to re hit the spots with my usual prespray.
Didnt use the rest of the product,, lol.