Read on ADam’s site that when the seem to not be as absorbent to actually boil them. It speaks to how your towels are reacting so might as well try it.
From their website:
Over time your microfiber may become contaminated past the point it can be completely cleaned using traditional methods. Typically this will present itself during use - drying towels will begin to feel less absorbent. Plush towels may lint slightly or smear products more than remove them. This is an indication that the fibers are 'full' either from residues deposited during use or things like fabric softener accidentally introduced during cleaning.
In any event, if your towels begin to loose their performance or just don't feel as good as they did new boiling is the solution, the last resort, to bring them back. NOTE: this process applies only to towels and microfiber without foam cores or backing. Never boil pads or applicators.
Fill a large cooking pot approximately 2/3rd full of water and bring to a boil
Add approximately 1-2oz of distilled white vinegar per gallon of water and stir
Place a few of the towels to be treated into the pot, maintaining a slow boil
Stir continuously with a large spoon, avoid letting the towels rest against the bottom or sides for too long
After about 60-90 seconds in the boil, remove the towels using tongs and rinse under cool water
Wash using the "Regular Cleaning" guidelines outlined earlier and they should be as good as new.
NOTE: Should boiling fail to bring absorbancy to a towel or the towel continues to lint then you are most likely dealing with a towel at the end of its lifespan. Retire the towel to less important tasks and replace with a new one for future use.
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