Monterey’s Mark It Blue Spray Solution Colorant
Use Mark It Blue to show where you have sprayed. It is a concentrated blue colorant that when sprayed, provides a temporary evidence of spray patterns. Typical ideal uses include parks, golf courses, turf, grass areas, athletic fields, basically any place where spray evidence is needed.
Use 1 oz of Mark It Blue per gallon of water. Add it to the spray tank when it is half full.