Unless you have Tapeworms or pinworms you probably won't see much...most parasites are microscopic, so unless you do a smear and within 20 minutes get it to lab, then you'll be sh_t out of luck!
Actually, there really are some parasites that require very quick examinations and if too much time passes you won't see them.
I think it is a waste of time to focus on these creatures because they will always be around us...the key is to strengthen the body so they can't take root!
MMS will knock off any that you carry now and as you get stronger your body will fight off any new invaders!