Generally speaking, there are more room cleaners than public security cleaners. This is because the workload of room cleaners is much greater than that of public health cleaners. For example, room cleaners should clean rooms, change sheets and quilts, change bath towels, and clean bathrooms and kitchens. Public health cleaners are mainly responsible for cleaning the lobby and public areas, such as sweeping carpets, cleaning toilets, cleaning covered bridges and cleaning public facilities. Therefore, the number of room cleaners is more than that of public security cleaners, and the ratio is generally above 3 1 or 4 1.