Why are bones put into a mattress in voodoo?

In voodoo practices, bones are sometimes placed in mattresses as part of rituals intended to influence or control a person's fate or behavior. This act can symbolize the binding of the person's spirit or the imposition of a curse. The use of bones, which are often associated with the dead, also reflects the connection between life, death, and supernatural forces in voodoo beliefs. Overall, it represents an attempt to harness spiritual power for specific purposes.