Call social services or adult protective services concerning guardianship for him. In order to appoint a guardian, the court must find the person incapacitated. So guardianship is a 2 part procedure; 1st part is incapacitiy, 2nd part is guardianship. Your husband could file a petition to be his guardian - but that would incur costs. A public guardian or a guardian who needs pro bono credit would be a good candidate to become his guardian.
I would consider contacting DSHS Adult Protective Services to see if they would file a guardianship for him. If there are no family resources, APS might take the case.
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