From Irwin Industrial Tools®Irwin Industrial Tools® has extended its Strait-Line Marking Chalk line to include Dust-Off Chalk and Permanent Staining Chalk.
Dust-Off Chalk is removable chalk that can be used to mark interior walls and trim and then wiped away cleanly. This is useful when the marked surface is indoors and needs to be painted or vacuumed. It is available in Light Violet.
Permanent Staining Chalk is great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear. It is weatherproof and will remain visible even after months of exposure to rain. Perfect for long-term use in high-traffic areas, it is available in Indigo Blue, Crimson Red and Midnight Black.
Depending on container size, suggested retail prices range from $1.50 to $20.