Thanks for the reply, but scattering is not a necessary part of eradication process ( i thought it was, which is why i continued DE for a week until stopping). In fact, scattering means that the substance annoyed the parasites but did not kill them, so they migrated to somewhere safe. Scattering makes the eradication process all the more difficult because there are few dewormers that are systemic, and even those would be hard to reach other parts of the body due to having to travel.