Jeyes Fluid /ˈdʒeɪz/ is a brand of disinfectant fluid for external use only. It is predominantly used for removing bacteria, while gardeners have found it effective at cleaning paths, patios, greenhouses, driveways, and drains - particularly of moss. With cautious use, it can also remove weeds. The product was patented by John Jeyes in 1877, and granted a Royal Warrant to the British Royal Family in 1896. "...that patients are given frequent warm baths, beginning at the end of the first week. Warm baths with some Jeyes' fluid in them are used, the latter preventing the spread of the infection."