Basically, the carpet acts as a filter and "filters" out the pollutants in the air and deposits them along these areas where the air movement is higher. (Edges of stairs, underneath doors, etc.) Over time, these lines get very dark and very difficult to remove.
This article will provide more information about these lines and what can be attempted to remove as much as possible of the discoloration.
1 comment:
Grime can really be a cringe-inducing irritant, seeing as how it is so difficult to scrub away. It's as if you need a special kind of stealth to get rid of that stuff, or maybe a really effective equipment will do all. Point being, it's not something worth dealing with for more than another second, and the quicker you can resolve it, the better. In any way, thanks for sharing that! All the best!
Frank George @ Dutch Hollow Supplies
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