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
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Availability:
In Stock.
Arrives
Thursday, Apr 30
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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
Brand Name: Not Rocket Sciences
Model Number: NRS-4X-S-SPI
Manufacturer: Not Rocket Sciences
UPC: 850008238970
Unit Count: 128.0 Fluid Ounces
Item Weight: 4.55 Kilograms
Liquid Volume: 1 Gallons
Item Form: Liquid
Coverage: 1
Specific Uses For Product: Lawn Care
Target Species: Lawn Grass
Mixing Ratio: 1128
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Apr 30
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
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.
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Reviewed in the United States on February 14, 2026 by Henry Fogwill
Size: 32 oz
Works great, super dark use less
Reviewed in the United States on April 11, 2026 by brennan Christian
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
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.
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Reviewed in the United States on November 19, 2025 by Ronnie Ray
Size: 32 oz
Worked great with my lawn fertilizer sprayer. Eliminates overspray and helps guarantee area is evenly covered. Prevents waste.
Reviewed in the United States on March 4, 2026 by Berk PerDieu
Size: 32 oz
Made my spraying much more accurate. This stuff will get on everything. A little goes a very long way.
Reviewed in the United States on February 27, 2026 by Lowsky1208
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.
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Reviewed in the United States on August 19, 2025 by Bryan
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