Rachel, you and I are fighting the same issue. I've been soaking my pot and medium in the mix bud suggested for about five minted every week for two weeks, then skip two weeks and do it again.
He's a forum participator that left a message in this thread. I think its something akin to 10 drops dish soap, 1 teaspoon cinnamon extract to 2 cups water.
Wow, sounds like a pretty bad infestation. I hope you manage to get them under control quickly. I've had them before, but caught it when they were still contained on 2 plants, which made eradication easy.
__________________ Camille
Completely orchid obsessed and loving every minute of it....