I use the wiper love for the "spring cleaning" in the stairwell because it was otherwise always very annoying to ship all the equipment into the stairwell or even for smaller spots like the fallen bottle of apple juice.
For coarser smudges where possibly stones are included, but I would not recommend this wiper because it hardly absorbs the dirt. Therefore, only 4 good star!
Conclusions in brief:
+ A quality image and not "rickety"
+ Easy to store, makes itself very narrow
+ Reasonable price
+ Innovative and practical, for especially for smaller areas
- Does not take on coarse dirt but rather liquid or smaller spots