I'll take a shot at answering this...
It's
not so much an APC leading to re-soiling, it's
ANYTHING you apply and don't 100% remove. If you spray some APC or any type of cleaner onto your hand and let it dry, the film will feel sticky or tacky. Same thing applies to a fabric.
This is why in my detailing classes I only show using water in a hot water extractor - not water plus an APC or some type of upholstery cleaner. If you're always injecting a cleaner into fabric or upholstery when using an extractor you're always injecting the CLEANER INTO the fabric or upholstery. You are NEVER purely extracting. Thus you leave some level of residue behind and this can accelerate re-soiling.
Now follow me....
If the above happens wit a tool that injects and then extracts liquids (extractors) - how much more so will the same thing happen when using a
steam machine that ONLY cleans
topically - it doesn't EXTRACT. Thus any cleaning agents (and dirt loosened with the cleaner), that is
NOT on the surface will thus remain
IN the fabric and because it will be
tacky or sticky it will lead to accelerated re-soiling.
At least that's my opinion based upon using these tools and what my brain is able to figure out simply by thinking about it.
Just to note - when I lived in California - there was a carpet cleaning company called
zerorez, (note zerorez is a palindrome, which spells the same thing backwards or forwards), and their entire sells pitch was with their system they leave ZERO RESIDUE. And of course they also claim any system that DOES leave a residue leads to accelerated re-soiling.
Also the way they claim to clean without cleaners is to use what the call/make
Electrolyzed Oxidated Water - Assuming this is true and accurate then they are injecting water and extracting water and whatever is in the carpet or upholstery.
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