Alright! The one way to see if it's working is to taste both spoons at the same time. You should get a sour electric taste. Another way, is to take it down to the local high school lab and ask them to test it on a scope. (with the battery connected)
The parasites should come out with your bm, but you can help them along by drinking plenty of water and herbal teas. I think there are some good ideas in the parasite Cleansing forum.