If you need to highlight a potentially hazardous area, floor tape is a highly visible means of identifying the area.
Striped in yellow and black, it is self adhesive and available in 33 metre rolls and 50mm width.
3M ATG 6mm Tape Adapter for ATG Gun
3M ATG Double Sided Tape Applicator
ATG Tapes for ATG Double Sided Taping System
Brush for Padding Glue