text: I am not familiar with asbergers but I work with adults with mental disabilities that have hygiene issues.  One thing I have them do is set out clean night clothes in the morning, as well as whatever clean clothes they plan on wearing the next day.  When they get ready for bed, it become part of the nightly routine to put on the clothes we laid out earlier.  This does not always work of course but I have noticed improvement.  I also will not allow them in my car to go to appointments, ect if they have a strong body odor.  I will arrive early and make them shower if I need to.  After a while, most of them found it was easier to just shower before I got there.  It takes about 2 weeks for something to become a habit or routine. I wish your friend all the luck in the world. \n\nSide note:  If this child is old enough to take part in social activities, I would recommend People First, The Ark or Special Olympics.  Being around other people with disabilities and doing something he enjoys would be more incentive to keep clean.