How do you get bar soap residue out of a wash cloth on which you cannot use chlorine bleach ?

I have tried Calgon water softener. The formula miust have changed. My husband will load up the wash cloth with Irish Spring bar soap, but doesn't rinse the wash cloth thhoroughly when he is done with it. Chlorinw bleach takes out the built up residue, AND THE COLOR.How do you get bar soap residue out of a wash cloth on which you cannot use chlorine bleach ?
The product that may help you is in the laundry detergent section.


It's a 1 liter/quart size plastic bottle.


It's called Gal Friday, and is a laundry additive.How do you get bar soap residue out of a wash cloth on which you cannot use chlorine bleach ?
At Walmart or a similar store, they sell a powdered product call 20 Mule Team Borax in the laundry detergent section. This product is fabulous, and should do what you need. It is also good for removing fabric softener build-up from towels and washcloths so that they absorb better.
Have you tried running hot water from the sink on it and wringing it like when you hand wash clothes? You probably won't have to wash it in the machine if he puts that much soap on it.
I would try a little vinegar water to remove the soap residue.
Doesn't it just wash out when you do the laundry.I have never heard of soap residue building up on wash cloths and not washing out in the washing machine.I have been doing laundry for over 35 years.
Use a cup of white vinegar in the presoak, and wash it in hot water. I buy white wash cloths so my family members can see if they need attention, but even some of the white ones cannot be bleached. Buy the man a nylon scrubby puff in a manly color for the shower!
Try the stain remover shout it out or oxiclean





I may time for new wash clothes.