Amc writes
Yes, the Turf Mark Blue Dye Indicator in the Tenacity Herbicide Kit will stain hard surfaces such as concrete, wood, vinyl, etc. Using a protective barrier is recommended to prevent overspray to these surfaces. If accidental overspray occurs, wash immediately with cleaning solution and water to remove. On turfgrass, the dye indicator will be visible for 24-48 hours.
Answer last updated on: 08/05/2021