what ever works is good but reducing the PH of powerburst kinda negates the purpose of choosing powerburst in the first place .
Most of these cleaning powders will have the same main basic indredients , usually sodium carbonate , stpp , and a surfactant
they then add one or two more indredients to aim it at its specific task ...
In the case of powerburst they wanted to make a high ph product so they added sodium metasilicate to push it up to 12
so if your reducing the ph by adding an acid then youd be as well off choosing a powder with a lower ph in the first place , either the woolsafe powders or something like formula90 or ultimate master
Have you come across dog stains on the rugs yet Sergio ?