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1 Gallon 4X Spray Pattern Indicator Dye + Surfactant, Makes 128 Gallons of Wetting Agent for Lawn & Turf Mark - Effective Spray Indicator, Liquid Blue Dye for Marking Turf, Easy to Mix & Apply

  • Based on 189 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Mar 13
Order within 2 hours and 56 minutes
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Size: 1 Gallon


Features

  • 4X CONCENTRATED POWER: Blue Spray Indicator Dye blended with surfactant 1 quart of this turf mark blue dye makes 32 gallons while 1 gallon sprayer of our blue grass dye makes up to 128 gallons.
  • 2-IN-1 BLEND: Wetting agent + undiluted liquid blue spray dye marker that simplifies your lawn care routine & saves time and money. This spray pattern indicator makes application effective & easier.
  • VISIBLE BLUE COLOR: This turf mark blue spray indicator dye is a blue colorant lawn dye that tracks your application coverage. Our blue indicator dye reduces overspraying, missed spots, and overlaps.
  • IMPROVES PRODUCT EFFICACY: This blue marker dye + lawn surfactant enhances the effectiveness of your grass and lawn care products by helping their active ingredients penetrate deeper and more evenly.
  • NON-STAINING, NON-PERMANENT DYE: This turf mark dye does not stain when diluted properly. The colorant in this turf mark + surfactant lasts 24-48 hours depending on sun and moisture conditions.
  • EASY MIXING: This marking spray paint dye can be tank-mixed with a fertilizer sprayer and other solutions. Use it for all spray applications and hydroseeding to increase efficacy & improve coverage.

Brand: Not Rocket Sciences


Item Weight: 4.55 Kilograms


Item Form: Liquid


Liquid Volume: 1 Gallons


Specific Uses For Product: Lawn Care


Package Dimensions ‏ : ‎ 11.06 x 9.84 x 4.76 inches; 10.03 Pounds


Item model number ‏ : ‎ NRS-4X-S-SPI


Date First Available ‏ : ‎ January 29, 2024


Manufacturer ‏ : ‎ Not Rocket Sciences


Best Sellers Rank: #34,137 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #922 in Garden Fertilizers


#922 in Garden Fertilizers:


Customer Reviews: 4.6 4.6 out of 5 stars (211)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Mar 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews


  • Works well.
Size: 32 oz
If dye is what you want this stuff does it. Wiped out all my weeds using this stuff as not to overspray. Watch out because it sticks around. Will dye concrete , rock , wood fence. Ask me how I know, lol. A few rains and it’s gone. It marks exceptionally well and the added surfactant helps stick on any weeds. ... show more
Reviewed in the United States on August 19, 2025 by Bryan

  • Wear gloves!!!
Size: 32 oz
Works great but wear gloves! Really hard to get off your hands if you accidentally make contact.
Reviewed in the United States on November 12, 2025 by C.B.M.

  • Worth the money
Size: 32 oz
This is a very good product, it let you know where you have sprayed whatever you have in your sprayer. I would caution you to wear protective gear using this stuff because you will get some on you one way or another. I like that it comes in a 32 oz. bottle instead of 16 oz others sell. I like the blue coloring which seems to last longer than the 48 hours stated. ... show more
Reviewed in the United States on November 19, 2025 by Ronnie Ray

  • Value!
Size: 32 oz
Super dark and concentrated! Doesn't take a lot. The original cap had a crack. The dye drips everywhere even if you're extra careful. Wish I had a special spout for better pouring. You get more for the money.
Reviewed in the United States on July 31, 2025 by DaveW

  • Great working product!
Size: 32 oz
Works great but very messy! Wear gloves used at 1/2 strength and still super easy to see where you’ve sprayed. Sticks to grass and weeds very well. Highly suggest battery powered sprayer for more than 1/4 acre.
Reviewed in the United States on September 8, 2025 by Scott L

  • Works very well!!
Size: 32 oz
Works very well! I did 1oz for every gallon and it was plenty dark for my application. This was the only photo that I took, after I strayed around our pavers, but you can obviously see where I sprayed. I tried my best to keep it off the driveway and pavers, but of course I got some on them. Hopefully it will fade/disappear quickly on its own. ... show more
Reviewed in the United States on September 2, 2025 by Charles L. Charles L.

  • Excellent
Size: 32 oz
Just as described.
Reviewed in the United States on October 25, 2025 by Julie

  • Great visual indicator
Size: 32 oz
You can definitely tell where it's been sprayed. I'm still trying to find tune the amount I use for a 12gal sprayer but it's less than the directions say.
Reviewed in the United States on September 17, 2025 by Josh

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