How Much Detergent?

Quiz: How do you figure out how much detergent to add to every load?

  1. I never think about it. I just pour a capful.
  2. I read the detergent labels carefully and use the recommended amounts for each load size and its level of soiling
  3. I call my mother.

Closely watching the amount of detergent used in each load is a good idea, if you want to save money by keeping clothes looking fresh and new. The recommendations on the detergent label are based on “average” wash load conditions: 5-7 pounds of clothes that are moderately soiled, being washed in moderately hard water.

Change any of these conditions, and you should change the amount of detergent you use:

When you have: You should:
A heavily-soiled load Add more detergent
Hard water conditions Add more detergent
Large capacity washer Add more detergent
Soft water conditions Add less detergent
Small loads Add less detergent
 

Hard water vs. soft water

Hard water contains minerals such as calcium and magnesium. The minerals react with soap to form a curd, which reduces the amount of soap available for cleaning. You probably have hard water if you find it hard to lather up with soaps and shampoos, or if you see white residue around your faucets and drains.

Laundry detergents are less sensitive to hard water minerals, which is why we use detergents instead of soap to do laundry. In extreme hard water areas, extra detergent will increase its softening power. You can also add a water softener or detergent booster to the wash water to increase its cleaning power.

Exceptionally soft water requires less detergent. You probably have soft water if you find it difficult to rinse all the shampoo from your hair.

If you aren’t sure about your water type, check with your local water company or Cooperative Extension Office.

For more detergent tips, check out Detergent FAQs

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