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4X Surfactant + Spray Pattern Indicator Dye, Wetting Agent for Lawn, 32oz | Not Rocket Science Turf Mark for Improved Application Accuracy, Easy to Mix & Apply

  • Based on 269 reviews
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Availability: In Stock.
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Arrives Saturday, Aug 15
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Size: 32 oz


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.

Description

4X Stronger Blend: A little goes a long way! Experience exceptional value in every drop with our 4X Surfactant + Spray Pattern Indicator. One quart / One gallon container can make up to 32 / 128 gallons, making our 4X Surfactant + Spray Pattern Indicator an unparalleled investment in your garden, grass and lawn care routine. Visible Blue Color: This powerful 4X Surfactant + Blue Concentrated Spray Pattern Indicator is an undiluted blue dye that lets you mark where you've sprayed. It helps you easily identify sprayed areas and missed spots, allowing you to track your progress and ensure comprehensive coverage. Improved Product Effectiveness: This powerful plant and lawn wetting agent boosts the efficacy of your applications by helping your spray solutions penetrate deeper and more evenly, making sure you maximize your fertilizer and other garden & lawn care solutions. It works effectively as a turf mark blue spray indicator dye and an efficient garden care product. Effortless Application: This 4X Surfactant + Blue Spray Indicator Dye reduces overspraying and missed spots, helping you avoid reapplication and wastage. Safely tank mixed with fertilizers and other solutions and apply! This easy mixing and easy-to-use Surfactant + Spray Pattern Indicator lets you save money, time, and effort, making it an ideal plant and turf marker dye for a beautiful, vibrant lawn and garden.

Brand: Not Rocket Sciences


Item Weight: 2 pounds


Item Form: Liquid


Liquid Volume: 32 fluid ounces


Specific Uses For Product: Lawns, Turfs


Brand Name: Not Rocket Sciences


Model Number: NRS-4X-S-SPI


Manufacturer: Not Rocket Sciences


Number of Items: 1


UPC: 850008238963


Unit Count: 32 Fluid Ounces


Part Number: NRS-4X-S-SPI


Item Weight: 2 pounds


Liquid Volume: 32 fluid ounces


Item Form: Liquid


Specific Uses For Product: Lawns, Turfs


Coverage: Medium


Target Species: Lawn Grass


Mixing Ratio: 132 or 1128


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 15

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

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Really helped worked great for me
Size: 1 Gallon
No doubt a bit messy so you gotta lay down something like cardboard or something to keep from getting everything blue. Make sure you wear gloves and clothes you don’t care about if you’re careful it’s not that bad but this stuff really works. You can see where you’re spraying and it lasts a long time. It does get on the concrete, but it’s not a permanent stain. It will run away eventually you can pressure wash it easily. ... show more
Reviewed in the United States on April 21, 2026 by Akram M.

  • Surfactant, saves you money is the end result!
Size: 32 oz
The surfactant dye makes identifying where you’ve sprayed your chemical, such as we weedkillers and insecticide very helpful. It will save you money because you don’t miss any spots.
Reviewed in the United States on June 23, 2026 by Sheldon

  • Satisfied with product
Size: 32 oz
Satisfied with the product. Just be careful not to spill any it takes a while to wash off your hands. Otherwise very satisfied.
Reviewed in the United States on July 16, 2026 by Ed S.

  • High quality product and very visible
Size: 32 oz
Great product and i am buying it again. I use a little less than the directions say because it is very blue. The product is think and will sink. I used a small drywall mixer attached to a drill to mix it in evenly. Spill this on yourself and you are transformed into a smurf for 24-48 hours. Wear gloves. ... show more
Reviewed in the United States on February 14, 2026 by Henry Fogwill

  • Worked well enough but expensive
Size: 32 oz
Very thick, just like ink in a pen. Does not mix the greatest so take some time and make sure it is mixed very well. The dye tends to settle at the bottom of the sprayer so you will get different shades and uneven coverage. Almost best to mix it in a small batch container then add it to more liquid in the sprayer. ... show more
Reviewed in the United States on October 10, 2025 by anthony pfeifer

  • 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

  • Super effective
Size: 32 oz
Works great, super dark use less
Reviewed in the United States on April 11, 2026 by brennan Christian

  • Works great
Size: 32 oz
This stuff works great. Beware not to spill it or drip it on anything you don't want turned blue though. it will stain very easily. Only takes a little bit in the sprayer and mixes very well. Highly recommend.
Reviewed in the United States on March 24, 2026 by Walt Schreiner

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