LawnStar

Liquid Lawn Dethatcher

Beneficial microbes & enzymes compost and digest harmful thatch

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$2795& FREE Shipping.

$5795& FREE Shipping.

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  • Allows water, air and nutrients to soak deep into the root system

  • Decreases risk of diseases, pests and trapped roots

  • Natural formula leveraging enzymes, biostimulants, humates + molasses

  • Decomposes thatch, grass clipping and other biodegradable lawn waste

  • Combine, or use as an alternative to manual dethatching

  • Treats up to 6,400 sq. ft.

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In continental US

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4.6/5

Reviews

112

Total Reviews


Customer review
Reviews

Miguel Herrera

07/11/2020

easy to use , goes great with aerator

Customer review
Reviews

Danielle Williams

07/11/2020

Great product! Wanted to start breaking down the thatch early so I can oversee in the fall.

Customer review
Reviews

Dilshan De Silva

07/11/2020

I’m yet to try the product (dethatcher), but I have done research on this and this seems to be a great product. However, I did try the lequid iron product last week and already seeing the green up - 5 stars for that!

Customer review
Reviews

Morgan Lewing

07/09/2020

The liquid dethatcher is an extremely welcome alternative to manually raking the yard multiple times a month. Plus, at the price point, it’s also very cost effective.

Customer review
Reviews

Swayze Johnson

07/09/2020

Easy to use with a 20 gal sprayer! Seems to be working so far

Package Dimensions

7.6 x 5.2 x 2.2 inches

Item Weight

2.75 pounds

Shipping Weight

2.75 pounds

Safety Data Sheet

Click here to download

Usage Instructions


For best results apply LawnStar Liquid Lawn Dethatcher before 10 am, or after 5 pm. This allows for decreased evaporation and greater efficacy. Application during the afternoon should be avoided.

Application should be repeated every two to four weeks (depending on thatch layer thickness) for best results.

May cause staining. Shake product well before use.

For pump-up garden sprayers

1. Mix 4–8 oz. LawnStar Liquid Lawn Dethatcher per 1,000 sq. ft. Premix with a generous amount of water to ensure sufficient spray volume for application.

2. Apply evenly across 1,000 sq. ft. of lawn

3. Water lawn for 20–30 minutes after application

For hose-end sprayers

1. Pour LawnStar Liquid Lawn Dethatcher into hose-end sprayer bottle

2. Set sprayer to "1 oz." setting

3. Evenly apply 4–8 oz. concentrate per 1,000 sq. ft. of lawn, depending on thatch layer thickness

Warranty & Support


Covered by the Evergreen Guarantee: If you aren’t satisfied with the results you get from trying any one of our products, contact us within 30 days of your order date and we will arrange a no-questions-asked return plus refund.

Support Email: [email protected]

Safety Information: Although we opt for the safest ingredients, it is important to treat it carefully as you would any other lawn and garden product. Keep out of reach of children. Do not ingest. Detailed safety information can be found on the backside of the product label, or by clicking on the Specification tab and reviewing the Safety Data Sheet.

Are you keeping an eye on the thatch layer?

Although often overlooked, keeping an eye on the thatch layer is pivotal for the long-term health of your lawn.

Thatch refers to the layer of dead turfgrass tissue that sits between the grass and soil/root system below. And while thatch is beneficial when maintained correctly, if it becomes too thick (more than half an inch), it has the opposite effect and becomes detrimental to your lawn.

A thick thatch layer often compliments compacted soil. It blocks air, water and nutrients from soaking deep into the soil and root system, effectively starving your grass from what it needs to sustain itself. On top of all that, a thick thatch layer promotes fungus, disease and insect infestation.

As Benjamin Franklin once rightly said “an ounce of prevention is worth a pound of cure”.

Are you at risk?

We could harp on about all the risks associated with letting your thatch layer get out of hand. As a general rule of thumb, you should be dethatching your turf at least a couple times a year. But if you…

  • Have heavy clay soil
  • Overwater
  • Mow too high
  • Use too many herbicides or pesticides
  • Use too many fertilizers

You may be even more susceptible to thatch overgrowth.

Meet LawnStar® Liquid Lawn Dethatcher

LawnStar® Liquid Lawn Dethatcher utilizes natural, front-line technology to combat thatch overgrowth from an unconventional angle–from beneath. By combining the powerful properties of biostimulants like enzymes, humates and molasses, our liquid dethatcher raises heat by encouraging microbial activity, creating an exothermic reaction that breaks down thatch.

In turn, as the thatch begins to melt, the organic stuff simultaneously gets eaten up, effectively feeding your turf.

It’s environmentally friendly and provides the perfect substitute if your turf isn’t able to be manually dethatched due to the time of season (or for any other reason).

Builds an armed troop of beneficial microbes in your topsoil

Begin applying in the warmer months and after a couple applications you’ll begin to establish a stable population of microbes that will fortify and protect your turf all the way through to the cold seasons.

Can be used alongside LawnStar® Fertilizers and other LawnStar® Adjuvants + Amendments to create a year-round, rock-solid lawn care program that’ll have your neighbors left scratching their heads trying to figure out how you did it.

environmentally friendly product

Environmentally Friendly

easy to use

Easy to Use

suitable for all grass types

All Grass Types


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4.6/5

Reviews

112

Total Reviews


Customer review
Reviews

Miguel Herrera

07/11/2020

easy to use , goes great with aerator

Customer review
Reviews

Danielle Williams

07/11/2020

Great product! Wanted to start breaking down the thatch early so I can oversee in the fall.

Customer review
Reviews

Dilshan De Silva

07/11/2020

I’m yet to try the product (dethatcher), but I have done research on this and this seems to be a great product. However, I did try the lequid iron product last week and already seeing the green up - 5 stars for that!

Customer review
Reviews

Morgan Lewing

07/09/2020

The liquid dethatcher is an extremely welcome alternative to manually raking the yard multiple times a month. Plus, at the price point, it’s also very cost effective.

Customer review
Reviews

Swayze Johnson

07/09/2020

Easy to use with a 20 gal sprayer! Seems to be working so far

Customer review
Reviews

Guy Gailliard

07/09/2020

Great product would recommend to anyone looking to get rid of thatch in their yard.

Customer review
Reviews

Alfredo Deniz

07/09/2020

Great product, friend gave me half a bottle to use on my lawn. Saw great results within 10 days.

Customer review
Reviews

Patrick Hall

06/26/2020

Easy to use, works fast, works great, way better than dethatching Or aerating manually

Customer review
Reviews

Jason Marsh

06/23/2020

seems like a good product, looking forward to the results

Customer review
Reviews

Mike Castagno

06/22/2020

I am on treatment 2 of ??. I've never dethatcher this lawn in the 2 yrs I've lived here and highly doubt the previous owner ever had in 20 yrs. After 2 applications I can see some debris buildup loosening but some spots are just really dense. I hope to be done with three applications.

Package Dimensions

7.6 x 5.2 x 2.2 inches

Item Weight

2.75 pounds

Shipping Weight

2.75 pounds

Safety Data Sheet

Click here to download

Usage Instructions


For best results apply LawnStar Liquid Lawn Dethatcher before 10 am, or after 5 pm. This allows for decreased evaporation and greater efficacy. Application during the afternoon should be avoided.

Application should be repeated every two to four weeks (depending on thatch layer thickness) for best results.

May cause staining. Shake product well before use.

For pump-up garden sprayers

1. Mix 4–8 oz. LawnStar Liquid Lawn Dethatcher per 1,000 sq. ft. Premix with a generous amount of water to ensure sufficient spray volume for application.

2. Apply evenly across 1,000 sq. ft. of lawn

3. Water lawn for 20–30 minutes after application

For hose-end sprayers

1. Pour LawnStar Liquid Lawn Dethatcher into hose-end sprayer bottle

2. Set sprayer to "1 oz." setting

3. Evenly apply 4–8 oz. concentrate per 1,000 sq. ft. of lawn, depending on thatch layer thickness

Warranty & Support


Covered by the Evergreen Guarantee: If you aren’t satisfied with the results you get from trying any one of our products, contact us within 30 days of your order date and we will arrange a no-questions-asked return plus refund.

Support Email: [email protected]

Safety Information: Although we opt for the safest ingredients, it is important to treat it carefully as you would any other lawn and garden product. Keep out of reach of children. Do not ingest. Detailed safety information can be found on the backside of the product label, or by clicking on the Specification tab and reviewing the Safety Data Sheet.

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