I think it depends on what the ritual was. Miss Cat gave this answer in a different thread to someone who was asking how to dispose of a Separation jar and will give you an idea of some of the options available:
"There are many different ways to handle a separation jar. Burying it for 7 days is one way -- but some people bury it permanently where the target-people have to walk over it. Others will bury it in a graveyard, to kill their relationship, or throw it into a river to wash them out of town. Likewise breaking such a jar or bottle in a crossroads will disperse them far and wide.
"Do not bury such a jar in your own yard unless you are one of the people being separated (like if you want a divorce) and do not keep such a jar in your own bedroom, living room, or kitchen.
"Some people burn such a jar in fire.
"Work like this does not only have ONE WAY that is correct. Like a song, everybody may know the tune and the lyrics, but we each sing it differently."
"For more information, check out this page: http://www.luckymojo.com/layingtricks.html#graveyard
Thank you, St. Michael, St. Expedite and La Santisima Muerte!