Knowledge, Skills and Abilities required at this level include knowledge of various cleaning methods, materials, and equipment used in custodial work; of proper procedures for disposing of waste, including medically contaminated sharps and medically soiled and contaminated dressings and supplies; and of chemical product safety. Sweeps, dusts, mops, scrubs, washes, vacuums, waxes, and polishes building floors, walls, woodwork, windows, furniture, equipment, and hardware.