Ray.... the 2 powders you refer to if they are red and blue pachets, then they will be "a" and "b" solution, put a teaspoon of each together then add a little water and watch the fizzing action, you could also mix the 2 powders and add the correct amount of water( I would have to lookat the old training manual to see the amount) then you could use this solution as a prespray, it does work well , but no better than anything else on the market.