Welcome to BP.net! I know you've "been" here for awhile...but this is my first chance to say "Welcome"...
Were I in your shoes, I would go ahead and order PAM. I've never...not once...heard of a case where PAM did not get rid of the mites when used properly. In addition to that, it's already formulated to be safe to use in your animals' enclosures....and comes with concise, clear directions on how to properly and safely use it. No mixing and no guess work involved!!
That being said...if you're deadset on using Equate...please wait until someone with actual experience using it chimes in and explains how. That's definitely not something you want to leave to hearsay... "Well, I've never used it, but I was told that if you mix it like this....." Very risky, in my opinion.
