Ask your host parents which cleaning products you should use. Though some cleaners work on many surfaces, some areas of the house need special attention. If it is your task to keep the common/living areas of the house neat and clean, it is important to use your eyes very well and to take a thorough look around every room to see what needs to be done. This way you are sure not to miss for instance the sticky fingerprints on the windows, which the children left there.