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32oz 4X Spray Pattern Indicator Dye + Surfactant, Makes 32 Gallons of Wetting Agent for Lawn & Turf Mark - Effective Spray Indicator, Liquid Blue Dye for Marking Turf, Easy to Mix & Apply

  • Based on 177 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Sep 16
Order within 2 hours and 28 minutes
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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.

Brand: Not Rocket Sciences


Item Weight: 32 Ounces


Item Form: Liquid


Liquid Volume: 32 Fluid Ounces


Specific Uses For Product: Lawns, Turfs


Package Dimensions ‏ : ‎ 7.56 x 5.71 x 2.32 inches; 2 Pounds


Item model number ‏ : ‎ NRS-4X-S-SPI


Date First Available ‏ : ‎ January 29, 2024


Manufacturer ‏ : ‎ Not Rocket Sciences


Best Sellers Rank: #11,923 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #399 in Garden Fertilizers


#399 in Garden Fertilizers:


Customer Reviews: 4.6 4.6 out of 5 stars 177 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 16

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


  • Strong stuff
Size: 32 oz
This stuff works better than expected. This is really great for spot killing weeds because the sufacant will deprive any plants the photosynthesis required for life therefore killing grass as well. It works great but be careful not to over spray.
Reviewed in the United States on July 23, 2025 by kim

  • Great for Marking
Size: 32 oz
Really Blue, goes along way! Be sure to wear latex gloves! Doesn’t wash right off
Reviewed in the United States on July 23, 2025 by wayne g.

  • Surfactant and indicator dye
Size: 32 oz
This product works well and acts as a marking dye to see where the product is placed, which is helpful during application. This is especially helpful for households with pets to know which spray areas to avoid. The product also acts as a surfactant and when mixed with other products, this helps with the overall coverage and effectiveness. One down side is this blue dye seems to end up everywhere and stains. Take caution when pouring and would recommend to wear gloves and working clothes while using this. ... show more
Reviewed in the United States on January 14, 2025 by Terra Livingston

  • Good product -hard to get off skin
Size: 32 oz
Don't get it on you- takes a while to get it off.
Reviewed in the United States on August 5, 2025 by Ellen

  • See whats needed
Size: 32 oz
Great visual aid in spraying lawns.Mix as directed and you will see where your product was last applied with a blue hue.The spray dye eventually disappears with rain or next lawn cut.
Reviewed in the United States on May 26, 2025 by joanna

  • Great surfactant
Size: 32 oz
Functionality: Did the job and made spraying pre emergent a breeze
Reviewed in the United States on July 11, 2025 by Joshua A Lack Joshua A Lack

  • Works as described. Perfect!
Size: 32 oz
AAA++++
Reviewed in the United States on July 14, 2025 by Jennifer

  • 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

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