The Gardena leaf and lawn collector (03565-20) is not ideal for use on a patio with stone slabs. Here are some reasons why:

- The rotating brushes of the leaf collector need to brush lightly against the surface to work effectively. This can be difficult on smooth surfaces such as flagstones as the brushes do not have enough grip to collect the material.
- The mechanics of the device are better suited to grass and other soft surfaces where the brushes can work effectively.

It is therefore advisable to use the leaf collector mainly on grass or similar surfaces. For stone slabs, a conventional rake or other type of cleaning tool may be more suitable.