How to Choose a Washer Cleaner — Oxygen vs Chlorine

The washer cleaner aisle can be overwhelming. But there are really only three things to decide: the ingredient, the form and your washer.

1. Ingredient: oxygen vs chlorine

	Oxygen	Chlorine
How it works	Oxygen bubbles lift grime off	Chlorine kills and bleaches mold
Pros	Residue visibly comes out; low odor	Strong disinfection; works in cold water
Cons	Works best in warm water; takes time	Strong smell; dangerous with acids
Best for	Regular monthly cleaning	Occasional use for bad odors

If you are starting out, choose oxygen. You can see the residue that comes loose, so it is easy to tell whether cleaning worked, and it is relatively safe if it meets other cleaners.

2. Form: powder vs liquid

Powders are mostly oxygen-based, easy to measure and cheaper. Liquids dissolve easily, even on cold cycles, but you usually get less for the same price.

3. Your washer

• Front-loaders need low-foam products. Look for “HE” or “suitable for front-loaders” on the package.
• Top-loaders fill with water and soak, so oxygen powders work especially well.
• Manufacturer recommendations: some manuals recommend a specific product or ingredient. It is worth checking.

Our picks

Below are our picks by type, based on the criteria above. Step-by-step instructions are in the front-load washer cleaning guide.