These are the advantages, disadvantages, if the cleaner every day to eat a lot of ash on the road, to get up very early, every day on the road is also easy to get into car accidents, the wages are also very low, the doctor will sometimes be patients or medical equipment infected with disease, the heart of the pressure, the soldering summer sweating, hot, long those sparks on the eyes is also damage, squatting too long and also susceptible to some of the disease.