This self-propelled lawn mower from Dewalt applies so-called mulching, where the lawn is fertilized with the grass.
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DeWALT DCMSP564N XR Brushless Self-Propelled Lawnmower 53cm 36V Bare Unit
ITS
Dewalt DCMWSP564N 2 x 18V XR Brushless 53cm Self-Propelled Lawn Mower - Body