Rainbow Rexair Vacuum Cleaner Water Fragrance Eucalyptus Scent R-14935 Pack of 4 Vacuum Cleaner Aromatherapy Rexair Rainbow Vacuum Cleaner Water Fragrance. 4 Bottles In Pack, each bottle 1.67oz Eucalyptus Scent. Add a few drops to the water pan, keeps the house, carpets and the vacuum cleaner smelling nice! Rainbow Canister Vacuum Cleaner Water Fragrances, Genuine Rainbow/Rexair Product.