Spraying hazmat suits with bleach solution before removal is the protocol in West Africa and was one of the things NOT stated in the CDC requirements which the Dallas hospital followed.
My guess about the Duncan family members is: knowing Ebola, once he felt even the tiniest bit ill, they maintained distance from him and used bleach solution. In one article I read about his stepdaughter, who is a nursing assistant, she ordered all the family to start using the disinfectant almost immediately. If they do not become infected, it also reveals no one had intimate contact with him prior to his illness.
The Dallas pastor who is the spokesman for the Duncan family was on CNN the other night. Said the group is all doing well at the private house. They avoid all contact with each other and take their temps multiple times a day. He said they have one more week under quarantine.