Tide Washing Machine Cleaner has been specifically designed to help remove and dissolve away odor causing residues that may build up in your washer over time - even from those areas you can"t see! Have you ever run a load a laundry and at the end, it just doesn"t smell clean & fresh? It could be coming from residues left behind in your washer. Washers today use less water, which can leave behind residues in machine - including areas you can"t see, e.g. back of the tub, hoses, drain, etc. These residues can lead to the build-up of malodor, which can be transferred to your laundry. Proper care for you machine, which includes running monthly clean-outs with Tide Washing Machine Cleaner to help remove these residues and keep them from causing laundry problems down the road. •Fights odor causing residues with a powerful oxygenated bleach system that gets at the source of the odor •Penetrates & Lifts Away - with its specially designed surface active ingredients, Tide Washing Machine Cleaner cleans away residues and deposits from the surfaces in your washer •Freshens washer leaving behind a fresh, clean scent •Works on both high efficiency and non-high efficiency machines •Not for use with clothes