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Ok, so I spoke to the builder and these tubes ( wires ) are for injecting pesticide. There is (outside the house) a small injector opening through which the pest control contractor or homeowner ( if a DIY guy ), will inject pesticide and it will spread inside the wall through micro openings these tubes have.
Found a video explaining the same-
Interesting - I've never heard of that. Thanks for letting us know.
I bet none of us would have guessed that!
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