Good advice, I assume. From what I understand, most soaps do not really do much to remove the chemical that irritates the skin and causes the rash, but I shouldn't be surprised that Dawn would help.
In my case, the first time, I never saw it. The second time, I saw it and thought I was being careful (gloves) but still managed to get it on my arms. So my issue seems to be knowing WHEN I need to treat as though I've touched it.