What's the difference between dethatching and scarifying? Both help care for your lawn by addressing thatch buildup, but they work differently. Sun Joe offers electric and cordless 2-in-1 dethatcher + scarifier models with separate cylinders for these functions.
Dethatching vs. Scarifying
Dethatching
Uses
- Removes accumulated thatch and loose debris from the lawn surface.
- Helps the lawn breathe and improves access to water and nutrients.
- Helps aerate the lawn, as described in the original article.
When to use
- When grass is actively growing and the soil is moderately moist.
- When thatch has built up to an inch or more, as noted in the original article.
Benefits
- Removes thatch that can prevent water and nutrients from reaching the soil.
- Promotes grass growth.
- Helps prevent conditions associated with mold, mildew, moss and fungi.
- Helps regulate temperature and moisture.
Considerations
- Dethatching a dormant lawn can damage the grass.
- Primarily removes above-soil thatch and debris rather than cutting into the soil.
Scarifying
Uses
- Removes thatch and debris from above and below the soil surface.
- Helps aerate the lawn.
- Uses slicing blades to cut into the soil and roots, encouraging grass growth.
When to use
- Late spring or early autumn, as described in the original article.
- Once or twice a year, depending on lawn needs, as described in the original article.
- After mowing the lawn.
Benefits
- Removes thatch that restricts water and nutrients.
- Helps prevent conditions associated with mold, mildew, moss and fungi.
- Discourages weed growth.
- Reduces a bouncy or spongy lawn feel.
Considerations
- The lawn may look rough for a few days while the grass and soil recover.
- Scarifying too often can damage the lawn.
Electric & Cordless Sun Joe Models
Both electric and cordless Sun Joe 2-in-1 models use a dethatching cylinder to lift thatch and a scarifying cylinder with blades to cut into soil and roots. The main difference between these models is the power source: electric models use a corded motor, while cordless IONMAX models use rechargeable batteries.
Corded Electric
- AJ801E — 12.6-inch, 12-amp electric dethatcher + scarifier; 5-position depth adjustment and interchangeable cylinders.
- AJ805E — 15-inch, 13-amp electric dethatcher + scarifier; 5-position depth adjustment and collection bag.
- AJ808E — 15-inch, 15-amp electric dethatcher + scarifier; dethatching and scarifying cylinders with adjustable working depth.
IONMAX Cordless
- 24V-X2-DTS15 — cordless 2-in-1 scarifier + dethatcher with 600W brushless motor; kit includes two 24V 4.0-Ah batteries and charger.
- 24V-X2-DTS15-CT — cordless tool-only configuration; batteries and charger sold separately.
Important: Working depths, cylinder designs, included accessories and power requirements vary by model. Refer to your specific product page and the product manual linked under its Product Attachments, when available, before setup, changing cylinders or operating the unit. For cordless models, confirm whether your configuration includes batteries and a charger.
Explore Sun Joe Lawn Mowers + Dethatchers
Need More Help?
If you need help choosing between dethatching and scarifying or using your Sun Joe electric or cordless model, contact Shop Joe Customer Support. Have your complete model number ready.