21 Commercial janitorial utensils and containers, not of precious metal or coated therewith, namely, buckets, buckets incorporating mop wringers and buckets incorporating castors; dusters, mops, mop heads, mop holders; commercial janitorial utensils, namely, scrapers and wipers, window and floor scrapers and wipers; non-electric carpet sweepers and floor sweepers, brooms, scouring pads, scrubbing brushes; bottles sold empty, empty spray bottles, dustbins, refuse bins, waste paper baskets; litter and waste scoops; cleaning sponges, sponge holders and sponge wringers; and parts and fittings for all the aforesaid goods