Clean building floors by sweeping, mopping, scrubbing, or vacuuming them. Gather and empty trash. Service, clean, and supply restrooms. Clean and polish furniture and fixtures. Clean windows, glass partitions, and mirrors, using soapy water or other cleaners, sponges, and squeegees. Dust furniture, walls, machines, and equipment. Make adjustments and minor repairs to heating, coolingMake adjustments and minor repairs to heating, cooling, ventilating, plumbing, and electrical systems. Mix water and detergents or acids in containers to prepare cleaning solutions, according to specifications. Steam-clean or shampoo carpets. Strip, seal, finish, and polish floors. Clean and restore building interiors damaged by fire, smoke, or water, using commercial cleaning equipment. Clean chimneys, flues, and connecting pipes, using power and hand tools. Clean laboratory equipment, such as glassware and metal instruments, using solvents, brushes, rags, and power cleaning equipment. Drive vehicles required to perform or travel to cleaning work, including vans, industrial trucks, or industrial vacuum cleaners. Follow procedures for the use of chemical cleaners and power equipment, in order to prevent damage to floors and fixtures. Monitor building security and safety by performing such tasks as locking doors after operating hours and checking electrical appliance use to ensure that hazards are not created.