BASF Turf Mark Blue Spray Marking & Pattern Indicator Dye for Weed, Fertilizer & Herbicide Application on Grass and Lawns, Non-permanent 32 oz

The directions call for 2-3 ounces of product for 3 gallons of water. I mixed the product at 2 ounces and it works great. My grass/weeds are pretty yellow as you can see in the picture, so it does stand out pretty good. If your grass is a lot greener you might have to go with a bit more in the water.I works great on the grass, but wear rubber gloves when mixing it unless you enjoy being mistaken for part Smurf. You can see my hand in the picture and that is after scrubbing with soap and water. It also will stain concrete. It will also stain dog feet! No, there was no chemical in the water when I did any of this, it was just the Blue Turf Mark. I just got the sprayer hooked up to my new lawn tractor and was experimenting with the color, flow rate, etc. I found that it also stains the bare feet of my 4 year old grandson!All in all I'm quite pleased with it. Now that I know how it sticks to non-grass surfaces, I'll be more careful in the future. I will definitely purchase more when I need it.

good product.

Easy to use, easy to mix, easy to measure and does not cause permanent stain. Was off my bermuda grass within 24hrs.It comes with a label with all the directions and first aid information.Measurement is on ml or oz for a proper dosign regardless if you use metric (like me) or imperial.Recommended!

I used this for the first time today, spraying weeds in my outdoor riding arena and in the gravel driveway. I used about 10 cc in 3 gallons of spray, and the color showed up enough for me to tell where I'd sprayed. The directions say 6-10 ounces per 100 gallons, so I figured 1 oz/10 gals = 1/3 ounce for 3 gallons. At about 30 cc per ounce, that came to about 10 cc. I used an old syringe (farm stores have them) to measure. I think this product will be fine for doing the spot-spraying for weeds on gravel and sand, but I'm not sure how well the color would show up on a lawn. I also noticed that it did stain the concrete floor in my garage (I dripped a little...), but others have said it washes off driveways in a few days. I wouldn't spray on nice concrete without testing it first. I dribbled water on the spots and left it for a couple hours. The stain is more pale but still visible. (Oh well. That stain is nothing compared to the oil stains from the truck!) For my purposes, it will work fine. If I want a deeper color, I'll add more dye. I don't go through enough spray in a summer for volume to be a concern.

Used this for a lawn spray indicator. First and foremost, having the ability to measure the product with the little squeeze chamber is critical for a dye like this, and if you look at other indicator products, the most common negative is from staining issues. With this product, I had no issues spilling it on myself, my clothes, or my driveway. Mixed well with a cocktail of ingredients, and provide a nice blue that was definitely easy to see on my mostly-dormant grass. It was almost nice, because the next day it had faded in a bit and combined with the lime green grass just waking up, it almost looked like an early summer green just coming out of winter. Anyway, it does the job you want it to. No, it won't make your lawn look like a smurf, but it's enough of an indicator to show where the spray is landing. Decent value for the amount of product, and definitely the easiest to use of everything available out there.

Works great in my backpack sprayer for use on a gravel lot. Can easily see where you have sprayed.

Easy to mark which weeds you've treated so not to treat twice.

The ink is bright and washer away without residue on concrete or stone. I use it with my garden sprayer.

Very effective in seeing where you have and haven’t sprayed. Very handy for spot spraying.

Large enough for many years of use and priced better then others online.

Little goes a long way. Works beautifully to mark any areas of spray.

I haven't used it yet but it shipped quickly and is ready for me to apply it. I am looking forward to using it for my lawn.

very useful as a marker, easy to measure and use.