We compared 10 robot vacuums for sand pickup - and one model was the clear favorite

This ZDNET article evaluates and compares 10 robot vacuums using controlled lab tests (sand pickup on hardwood and carpet) and real-world reviewer input, reporting the Ecovacs X8 Pro Omni as the top performer with a 60.28% average pickup and the Dreame L40 Ultra as runner-up; it also describes testing methodology and buyer considerations such as floor type, mapping, battery, and connectivity.