Yep, this works for me. Some helpful hints: Be sure to do the swf on a perfectly empty stomach (don't even drink any water first). Be sure you are well hydrated when you do the swf (drink lots of extra water the day before). Be sure your colon is not congested when you do it.
There is a certain amount of mind over matter to these icky cleansing techniques: If you don't mind, it don't matter!