Reformers used moral codes, building codes, fire codes, zoning, planning committees and inspections to limit or remove SRO hotels. An example of moral critiques is Simon Lubin's claims that "unregulated hotels" were "spreading venereal diseases among the soldiers". Other reformers tried to ban men and boys from rooming in the same hotels, due to concerns about homosexuality. The building and safety codes criticized SRO hotel problems such as "firetraps, dark rooms, inadequate plumbing, an insufficient ventilation." In San Francisco, building code inspections and restrictions were often used to racially harass Chinese labourers and the places they lived.