They tend to roughen the concrete surface more than grinding or scarifying. Some machines, like EDCO's Chip-Dek scabbler, can remove up to 1/4 inch of concrete in a single pass. The actual ...

Scarification is one solution to a common lawn problem: an overgrowth of thatch, the dense layer of decomposing plant material that sits just under the surface. Excessive thatch can damage the ...