You can eat alot of granny smith apples and drink apple juice to help shrink the stones. You can buy malic acid to do this as well but i dont bother to do either. The info is on the forum somewhere.
I did 3 flushes about 5 to 6 years ago when Dr clarks book first came out. That is when i got the biggest stones out and mostly mean greenies. I did about 4 flushes last year and got mostly small tan stones out. Im going to do a flush tonight to see what junk has returned after a year. I am getting ready to down my first Epsom Salt drink...YUMMMIE!