Keep costumes short to prevent trips, falls, and other bumps in the night. Try make-up instead of masks.
Masks can be hot and uncomfortable and, more importantly, they can obstruct a child's vision.
Make sure kids wear light colors or put reflective tape on their costumes. Parents should accompany young children. Together, map out a safe route so parents know where they'll be. Tell them to stop only at familiar homes where the outside lights are on. If it's dark, make sure someone has a flashlight and pick well-lighted streets.