Thank you for using Just Answer. At his age it is important that he receive nurturing and feels secure. If his personal items travel with him, it may not be as damaging as one might suspect. More damaging may be the unpredictability of living with people who use drugs, thus resulting in changes in emotions and parenting type behaviors. If he has consistent structure and positive attention, he should be ok.
I hope you are able to provide this for him, or his parents can see their way to work on getting clean. He deserves a good and healthy start. Please let me know what other questions you have. Thanks, Gina