Varela points out, for instance, that since high-efficiency washing machines use less water, they need less detergent.
“You should only use a teaspoon in a HE washer for every tablespoon you use in a regular machine,” he advises.
Stains are another factor that might affect the amount of detergent you use. Varela adds, “I always recommend dabbing the stain with a little more detergent, letting.
it sit for five minutes, and then putting it in the washing machine.” Additionally, you should use more if you have a dirty load but are not dealing with stains.
O’Connor advises adding around 50% more than one would typically do. On the other hand, you should use around half as much when washing delicates (think sweaters or lingerie) as you normally would.
Your garments will still be filthy or smell bad after washing if you use too little detergent. However, too much of a good thing may also be a problem.
