The invention relates to a scraper, including a device for projecting-onto a surface through an opening, and a scraping body with a resilient scraping element including a ridge capable of scraping a smooth surface. The body includes, towards a surface of the scraping element, a device for collecting liquid on a substrate absorbing residual liquid connected to a conduit. The device for collecting has an end surface-capable of entering into contact with said surface. The invention also relates to a household appliance incorporating such a scraper.