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

175

Total Reviews


Customer review
Reviews

Kevin Schieber

10/14/2021

Product greened up lawn very quickly and started to loosen the thatch. Excited to see what happens after the next two treatments.

Customer review
Reviews

STEVEN JACKSON

10/11/2021

Product has been on the lawn for two nights and i haven't seen any real results yet. I used the whole 32oz on my 2,000sq ft backyard

Customer review
Reviews

FARAH CHAJIN

10/06/2021

It works as advertised, you do need to give it time to do its job, though. Would recommend!

Customer review
Reviews

Zhanxiang Wang

10/01/2021

Great product. Very well packaged and delivered on time.

Customer review
Reviews

Jason Stewart

09/28/2021

Great product!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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

175

Total Reviews


Customer review
Reviews

Kevin Schieber

10/14/2021

Product greened up lawn very quickly and started to loosen the thatch. Excited to see what happens after the next two treatments.

Customer review
Reviews

STEVEN JACKSON

10/11/2021

Product has been on the lawn for two nights and i haven't seen any real results yet. I used the whole 32oz on my 2,000sq ft backyard

Customer review
Reviews

FARAH CHAJIN

10/06/2021

It works as advertised, you do need to give it time to do its job, though. Would recommend!

Customer review
Reviews

Zhanxiang Wang

10/01/2021

Great product. Very well packaged and delivered on time.

Customer review
Reviews

Jason Stewart

09/28/2021

Great product!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Customer review
Reviews

Jack Smithy

09/28/2021

I was lured into the lawnstar products by the liquid dethatcher. I liked the idea of spraying the lawn as opposed to raking the thatch out. I have a tow behind unit as well but it just does not get the same results as what raking does. I have to say I was not expecting much from the liquid dethathcer but I paired it with the liquid aerator and I could see the difference just about 4 days after treatment. The layer of brown thatch was thinning and I could see soil layer. Very good buy!

Customer review
Reviews

David Lawson

09/27/2021

Wonderful product...it broke down the thatch noticeably within a few days!!!

Customer review
Reviews

Russell Domis

09/24/2021

This product works great. It does what it says it does. Great results. Great company

Customer review
Reviews

Tim Boehm

09/22/2021

Nice nice nice nice nice Nice nice nice nice nice

Customer review
Reviews

James Fisher

09/19/2021

I would like to know more like when can i fertilizer week or two week later

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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