With the caveat that this is all make-believe, it seems like your typical ghost is anchored to a location, not some specific piece of wood or plaster within that location that could be replaced thus “removing” the ghost. They are well known for passing through physical matter as if it weren’t there, so the idea that they would be somehow pegged to a specific piece of physical matter doesn’t seem right. Ghosts are also known for haunting things are newly built on the site of old haunted houses or graveyards, which also points to not being able to dissolve ghosts simply by destroying or altering the physical area around the site of the haunting. Thanks for coming to my lecture lol.
With the caveat that this is all make-believe, it seems like your typical ghost is anchored to a location, not some specific piece of wood or plaster within that location that could be replaced thus “removing” the ghost. They are well known for passing through physical matter as if it weren’t there, so the idea that they would be somehow pegged to a specific piece of physical matter doesn’t seem right. Ghosts are also known for haunting things are newly built on the site of old haunted houses or graveyards, which also points to not being able to dissolve ghosts simply by destroying or altering the physical area around the site of the haunting. Thanks for coming to my lecture lol.