Mystery Dark Spots Smudges on Laundry

 Front Load, HE Washing Machine  Cleaner for Smelly Mold / Mildew Found!



Nu Fresh, LLC

P.O.Box  272581 

Fort Collins, CO 80527

Est. 2008

Nu Fresh, LLC BBB Business Review 

waving flag 2

Veteran Discount Email Instructions

support troops 35 percent

click image for more info


click image for more info

water-drop-image taller




Dryer Mildew  Smells

Washing Machine Stains:

Mysterious Dark Spots or Smudges After Washing and Drying

I don't know if you want to put this detail into your file of cases:  For some reason, the loads of "darks" seem to smell more than the colors or the whites, and oddly so.  Some of the clothes smell right out of the dryer and I hurl them into the pile to be washed again, but some insidiously smell OK when I take them out of the dryer and fold them to be worn, but after several hours of being worn they begin to stink, and become more and more overpowering the longer I have them on!  I can barely get home in time to take them off again in despair -- In one case I nearly purchased another blouse just to get rid of the horrible "B.O." smell that had "blossomed" over the hour or two I'd had the garment on!



It seems that cold water or softened water are very poor at removing all the body oils and food stains from fabrics. This causes very thin (invisible) layers to accumulate over time.  But not enough to see the residue. This provides an organic surface for the contaminated detergent to attach to. Just like it attaches to the plumbing in a washer.

This is a food source for the nasties and creates the Mystery Spots and odors. The spots are probably mold or mildew that grow enough on the fabric in the short time the garment is in the dryer to cause the stain.

Add to that: Cold water / soft water are not good at rinsing out the detergent and fabric softener so they stick to the oils on the fabric and it makes things worse than normal. Just think of what it is like rinsing shampoo from your hair with cold water or soft water. It takes a while. And, the machine timer / sensor does not know that. It can stop the rinse cycle before all the stuff has been removed from the fibers.

Add to that: Most people use way too much detergent so there is a lot to rinse away.

 Put it all together and its a plausible scenario. This scenario is an educated guess based on the info available. But the solution given below seems to have worked for a lot of people. So, I’ll bet I’m close to being right...

This problem is an indication that you have biofilm growing inside your machine.

Run a Super Shock or two to blast it.  Then use TechnoFresh to keep it under control.


If you have these problems (only some people do..), you need to wash in hotter water every now and then to get the body oil, sweat, food stains and detergent residue to release from the fibers. This is because the oils, sweat, and excess detergent is the food source for the nasties (mildew) that cause the stains.

    Then wash as normal adding a small amount of TechnoFresh® to make sure you don’t get spots until it is time for another hotter wash as determined by your habits.

Also Use as a Sport Wash:

Sporting clothes that wick moisture using polypropylene or other synthetics:

These items can develop a musty, not quite clean smell over time. This is due to the body oils also wicking along the fabric and remaining after washing in cold/cool water as directed.

After washing and rinsing as normal, soak these items in a cool to warm TechnoFresh® solution (1 oz in 1 gallon) overnight to remove the nasties that are remaining on the surface and especially down in any pores in the fabric that are causing the odor. Rinse the items thoroughly.


This was the comment that started

 the dark smudge project:

Quite frankly, Thomas, I really do have more important things to do in my life than to make up stories like this!!

I've attached a file containing 24 pages of internet complaints and some alleged solutions on the same or similar problems.

(I’ve always wondered if those two lines were meant to be ironic... or not...  ;-)

I am trying to take some photos of my spotted shirts, but because the spots are on dark colored tops and t-shirts, they are hard to see.

Thomas, my question about these spots is WHY do they occur in the first place.  I do not have a problem treating them with a stain remover and rewashing them.  Now that they are treated, the second washing removes the stains THAT WERE NOT ON THE CLOTHES BEFORE THE FIRST WASHING --

button printer friendly PDF