Liquid HarvestLazer Blue Concentrated Spray Pattern Indicator - 1 Gallon (128 Ounces) - Perfect Weed Spray Dye, Herbicide Dye, Fertilizer Marking Dye, Turf Mark and Blue Herbicide Marker

Liquid Harvest Lazer Blue Concentrated Spray - I have about a half an acre of desert property that needs to be sprayed. last year I bough and went through quite a lot of the Spray Pattern Indicator I could get at lowes/home depot. those worked ok but I had to keep going back for more because the bottles wee small and in the end I spent a lot of money on them. this product was so much better. it seems more concentrate than the stuff I bought last year. I think I used too much (probably used more then recommended based n the previous years use of a different product) since when I was done I joked with my wife that the yard looks Smurfy. It faded a lot in the 1st 48 hours but took a couple weeks to fade completely (helped by some rain too). next time I will use a lot less. the advantage of the smaller bottles from home depot was pouring it was easier. My hands were stained for a few days where it got on me. I would not use this wearing anything i care about but the clothes I wore did seem to come clear in the wash.

I always use this when I am spraying herbicides. Very visible markings and washes of concrete, stone, and clothing in a short time. I recommend it.

I mix this with my pre-emergent and my Celcius weed killer. This works extremely well making it visible where I sprayed. It helps me make sure I spray everything as well as marks the area for the kids to avoid when they're playing!

To see the difference better I used an ounce per gallon. Using the recommended 1/2 ounce didn't distinguish what had been done well enough. I am very pleased with the ability to not miss areas or redo what was already done.

If you're spreading any type of herbicide this is needed. It shows where you already sprayed really well and the color doesn't bad. If you don't have it in your mixture you will easily overexposure or miss areas.

Works as directed. Never spray without it.

This stuff is a must in order to know where your product has been applied to. It is easy to clean up and is water soluble, so the blue goes away soon after a rain. Just a little goes a long way.

I used this when working on a lawn renovation to see where I sprayed and it worked great.