A drain cleaner which is superior in portability and which makes it possible for a small number of people to perform drain cleaning operation on a broad floor. A drain cleaner (1) comprises a strip body (2), and a reel body (3) for winging or unwinding the strip body (2). The strip body (2) has a handle (4) at its front end (2a), the opposite edges (2b, 2b) thereof having attached thereto flexible members (20, 20) made of rubber having high adhesion to a floor or the like. Surrounding a puddle on a floor by the strip body (2) unwound from the reel body (3), one of two operators holds the handle (4) of the strip body (2) and the other holds the reel body (3). By pulling the strip body (2), the water in the puddle can be swept by the strip body (2).