Why is it strongly recommended that property companies buy electric sweepers?

As the big housekeeper of the community, the property management company must maintain the sanitary environment quality around the public places in the community. There are twenty or thirty buildings inside and outside a large residential area, so it is unrealistic to completely rely on manual cleaning of public places, and some auxiliary equipment must be used. For example: sanitation sweeping vehicle, high-pressure cleaning machine, cleaning vehicle, etc.