Hi-Yield (31051) Super Marking Dye, 16 oz

Works as it should, it turned my red killzall weed killer to blue with a little product making it much easier to see where applied, and the blue was washed away with rain.

used it to mark the spray for Weeds as well as getting ride of NUTSEDGE works great

Use more than recommended … it doesn’t show up well when applied at the dilution level given on the label. It looks like it would when in the tank, but doesn’t when sprayed. When I sprayed today, the only place I could see the dye at all was on the thatch in the lawn. Fine if you are doing pre-emergent spraying on dormant turf, but not so much once it’s growing again and green.

I use this a lot. I have a long gravel driveway that I treat with (expensive) weed killer. This is a must to not waste expensive weed killer or other sprays

Excellent as described