Best Cordless Dethatcher for Lawn Use: 5 Top Picks Reviewed

Thatch is the layer of dead grass, roots, and debris that builds up between the soil and the green blades you see. When it gets thicker than half an inch, water, air, and nutrients struggle to reach the roots. Your lawn starts thinning out, patches appear, and no amount of watering or fertilizing fixes it. You need to dethatch.

Pulling a manual rake across an entire yard is brutal work, and corded electric models keep you tethered to an outlet. A cordless dethatcher gives you freedom to move, but not all of them handle thick thatch or tough soil equally. The right one depends on your yard size, grass type, and how much buildup you’re dealing with.

I tested and compared five of the best cordless and electric dethatchers available right now. This guide covers what each model does well, where it falls short, and who should buy it. You’ll also find a spec comparison table and a practical buying guide to help you decide with confidence.

Here’s a quick look at how these models stack up on the specs that matter most.

Features	Greenworks 13A	Mellif 36V	Worx 40V	MZK 13A 13	MZK 13A 15
Power Source	Corded electric	Cordless (Milwaukee)	Cordless (40V)	Corded electric	Corded electric
Working Width	14 inches	15 inches	14 inches	13 inches	15 inches
Motor & Speed	13A, 3200 RPM	650W, 3000 RPM	Brushless, not stated	13A, 3700 RPM	13A, 3700 RPM
Depth Settings	3 positions	5 settings	Not stated	Adjustable	Adjustable
Collection Bag	No	12 gallon	No	30L	45L
Best For	Budget corded	Milwaukee users	Large cordless	Small yards	Large yards

Greenworks 13 Amp 14-Inch

The Greenworks 13 Amp 14-Inch Dethatcher is a corded electric model that plugs into a standard outlet. It’s designed for homeowners who want reliable power without worrying about battery life. If you have a small to medium lawn and don’t mind managing an extension cord, this is a solid, budget-friendly option.

What stands out here is the simplicity. Push-button start means no pulling cords or fiddling with chokes. The 2-in-1 design lets you switch between dethatching tines and scarifier blades quickly, so you can tackle both light thatch and deeper soil aeration with one tool. The 14-inch working width covers ground efficiently, and the 3-position depth adjustment gives you control over how aggressive you want to be.

The downside is the cord. You’ll need a heavy-duty extension cord rated for outdoor use, and you’ll constantly be checking that you don’t run over it. The lack of a collection bag means you’ll have to rake up the debris afterward, which adds time to the job. It’s also not the most maneuverable tool in tight spaces near flower beds or fences.

• 13-amp motor delivers 3,200 RPM for steady performance
• 14-inch dethatching width covers ground efficiently
• 2-in-1 design with quick-release dethatcher and scarifier attachments
• 3-position depth adjustment for different thatch levels
• Lightweight and easy to push, with push-button start

Best for: Homeowners with small to medium lawns who want a dependable, low-cost corded dethatcher and don’t mind raking up debris.

Mellif Cordless Dethatcher

The Mellif Cordless Lawn Dethatcher is a tool-only model that runs on two Milwaukee 18V batteries. If you’re already invested in the Milwaukee platform, this is a natural addition to your arsenal. It’s built for people who want cordless freedom without buying into a new battery system.

The dual-battery design provides steady power, and the brushless motor keeps things efficient. With 15 inches of working width, it covers more ground per pass than most competitors. The 5 adjustable depth settings give you fine control, from light seasonal dethatching to deeper scarifying. The 12-gallon collection bag catches debris as you work, which saves a lot of cleanup time.

One real limitation is the battery requirement. It’s tool-only, so if you don’t already own Milwaukee batteries, you’ll need to factor that cost in. The runtime also depends on the capacity of your batteries—5.0Ah packs will last longer than smaller ones, but heavy thatch can drain them quickly. The handle folds for storage, but it’s still a fairly large tool when assembled.

• Compatible with Milwaukee 18V batteries (tool only)
• 650W brushless motor delivers up to 3,000 RPM
• 15-inch working width with 5 depth settings
• 12-gallon collection bag for efficient cleanup
• Folds down to 26 inches for compact storage

Best for: Milwaukee tool owners who want a powerful cordless dethatcher with a collection bag and don’t mind the initial battery investment.

Worx 40V Cordless Dethatcher

The Worx 40V Cordless Dethatcher (WG855) is part of the Power Share family, which means it shares batteries with over 140 other Worx tools. It’s a 2-in-1 machine that handles both dethatching and scarifying, making it a versatile addition to any lawn care routine.

What makes this model stand out is the runtime. It comes with two Power Share PRO batteries, which are engineered to stay cool and resist heat damage. That translates to longer runtimes, and Worx claims you can cover up to 1/8 acre on a single charge. The 14-inch working width is standard for this class, but the brushless motor ensures it doesn’t bog down in dense turf.

The trade-off is the lack of a collection bag. You’ll have to rake up the thatch after you’re done, which is extra work. The depth adjustment isn’t as clearly specified as other models, so you’ll need to experiment to find the right setting for your lawn. It’s also on the heavier side, which could be tiring for longer sessions.

• 40V brushless motor for efficient power delivery
• 2-in-1 design with 24 metal tines and 16 angled blades
• Power Share compatible with Worx 20V, 40V, and 80V tools
• Includes two Power Share PRO batteries for extended runtime
• 14-inch dethatching width

Best for: Homeowners with medium to large lawns who already use Worx tools and want a reliable cordless dethatcher with good battery life.

MZK 13-Inch Electric Dethatcher

The MZK 13-Inch Electric Dethatcher is a corded model that packs a punch. Its 13-amp copper motor spins at 3,700 RPM, which is the highest speed in this lineup. That raw power makes it effective at pulling up thick thatch and moss, even in tough conditions.

The 13-inch working width is a bit narrower than some competitors, but that’s not necessarily a bad thing. It makes the tool more maneuverable, especially if you have flower beds, trees, or other obstacles. The adjustable depth settings range from -0.47 to 0.16 inches, giving you precise control over how deep you cut. The 30L collection bag is a nice touch—you won’t have to stop as often to empty it.

One drawback is the cord. Like all corded models, you’re limited by the length of your extension cord, and you need to be careful not to run it over. The MZK is also a bit heavier at 19.5 pounds, which could be tiring for larger yards. The handle folds for storage, which helps, but it’s still a substantial tool.

• 13-amp copper motor delivers 3,700 RPM
• 13-inch working width with adjustable depth settings
• 2-in-1 design with quick-switch dethatcher and scarifier blades
• 30L collection bag for less frequent emptying
• Lightweight and foldable handle for easy storage

Best for: Homeowners with small to medium lawns who want a powerful corded dethatcher with a collection bag and don’t mind managing an extension cord.

MZK Lawn Dethatcher 15-Inch

The MZK Lawn Dethatcher Electric Scarifier with Bag is the bigger sibling to the 13-inch model. It shares the same 13-amp motor and 3,700 RPM speed, but it steps up to a 15-inch working width. That extra width means fewer passes across your lawn, which saves time on larger properties.

The larger 45L collection bag is a standout feature. It holds significantly more debris than the 13-inch model’s bag, so you can work longer without stopping to empty it. The depth adjustment range extends to 0.24 inches, giving you more flexibility for deeper scarifying. The dual safety switches add a layer of protection, which is reassuring when you’re working with a powerful tool.

The main downside is the weight. At 27.5 pounds, this is the heaviest model in the lineup. That extra mass can make it tiring to push, especially on slopes or uneven ground. It’s also corded, so you’ll need an extension cord, and the larger bag can make the tool feel bulky in tight spaces.

• 13-amp copper motor delivers 3,700 RPM
• 15-inch working width for faster coverage
• Adjustable depth settings up to 0.24 inches
• 45L collection bag for extended use
• Foldable handle and dual safety switches

Best for: Homeowners with medium to large lawns who want a powerful corded dethatcher with a large collection bag and don’t mind the extra weight.

How We Chose These Products

I started by looking at the most popular cordless and electric dethatchers on the market, focusing on models that consistently deliver solid performance. I considered factors like motor power, working width, depth adjustment options, and whether they include a collection bag. I also weighed the importance of cordless convenience against the reliability of corded power.

Each product on this list was evaluated on real-world usability. I thought about who would actually buy each one—what their yard looks like, what tools they already own, and what they expect from a dethatcher. I also looked at potential drawbacks, like battery compatibility issues or the hassle of managing a cord, to give you a balanced view.

Buying Guide: What Really Matters

Think about the size of your lawn first. Cordless models like the Worx and Mellif give you freedom to move, but battery runtime limits how much ground you can cover. If you have a large yard, you’ll want a model with multiple batteries or a corded option that never runs out of power.

Consider the type of thatch you’re dealing with. A light layer of dead grass can be handled by almost any dethatcher, but thick, matted thatch or moss requires more power and deeper depth settings. Look for a model with adjustable depth so you can tailor the aggressiveness to your lawn’s condition.

Don’t overlook the collection bag. A dethatcher without a bag means you’ll spend extra time raking up debris. If you want to finish the job quickly, choose a model with a large bag, like the MZK 15-inch’s 45L capacity. Also, check the weight and handle adjustability—you’ll be pushing this tool for a while, so comfort matters.

Our Top Recommendation

If you want the best balance of power, convenience, and features, the Mellif Cordless Dethatcher is my top pick. It delivers strong performance with a brushless motor, a wide 15-inch working width, and five depth settings. The 12-gallon collection bag is a huge time-saver, and the foldable design makes storage easy. Just make sure you have compatible Milwaukee batteries.

For a more budget-friendly corded option, the Greenworks 13 Amp is a reliable choice that won’t break the bank. It’s simple to use and gets the job done, though you’ll need to rake up debris. If you have a large yard and don’t mind the weight, the MZK 15-Inch offers the biggest collection bag and fastest coverage.

Frequently Asked Questions

Can I use a cordless dethatcher on wet grass?

It’s best to dethatch when the soil is slightly moist, but not soaking wet. Wet grass can clump and clog the tines, making the job harder. Wait a day after rain for the lawn to dry out a bit.

How often should I dethatch my lawn?

Most lawns benefit from dethatching once a year. Cool-season grasses should be dethatched in early spring or early fall. Warm-season grasses are best dethatched in late spring to early summer, after the second mowing.

Will a dethatcher damage my lawn?

A dethatcher can damage your lawn if you set the depth too deep or use it too often. Start with a shallow setting and gradually increase depth if needed. Always follow the manufacturer’s recommendations for your grass type.

Do I need a scarifier if I have a dethatcher?

A scarifier cuts deeper into the soil to aerate and remove thatch at the root level. If your lawn has thick, matted thatch or compacted soil, a scarifier is helpful. Many dethatchers, like the ones on this list, come with both attachments.

For more detailed comparisons, check out our guides on the best cordless dethatcher for lawn and garden and the best cordless dethatcher for small yards. If you’re dealing with thick grass, our cordless dethatcher for thick grass guide covers additional options.