Just to reiterate, using grapefruit, orange or even lemon juice as the dilution or any other citrus juice or anything with Vitamin C in it will render the Miracle-Mineral-Supplement useless. Lemon juice in the small quantity used for activation does not have enough Vitamin C in it to cause a problem, though from what I've read, citric acid is better, which is what I use.
I've been taking the Miracle-Mineral-Supplement with just distilled water. I worked up to 15 drops at one point, but I got too nauseous. I don't like fruit juice because it just has too much Sugar (and I'm talking about 100% juice.) But I've finally gotten sick of the taste of just water diluted solution, so I got some 100% apple juice and tried that for the first time this morning. It's much better.