You can brush your teeth (and TONGUE)! Though I actually switched to Tom's (a natural toothpaste) as my usual Mentadent tasted like straight Sugar after a few days of my first cleanse. I never switched back either.
As for the SWF, you can certainly do the tea morning and night as a replacement. But I would really try to get that through you. I have a strong stomach and I couldn't do it the first time I tried it either....but then somebody here recommmended Celtic Sea Salt (I found it at Whole Foods...kind of greyish color) and it was SO MUCH easier to get down. Do try that if you can, it isn't nearly as disgusting and the flush is really beneficial.