A)river or toilet will work.
B)1 piece of plain blessed and charged parchment paper.
Write the persons first and last name on the parchment or use a picture of them. Tear it into 4 equal pieces, starting on a waning moon phase. 1 day at a time, flow one pieces down the toilet or river while chanting, watching as it goes away this:
"As this item flows away, you(persons name) are gone from my site today."