How to clean ac vents part 2

Hi all,
In this video i have done deep cleaning of the ac vents by directly opening the ac vents and it really worked .
But as i did with the ac cleaning foam it didn't clean well all the dust was like that only . i recommend to use that foam only when the dust in the vent i a normal upper dust and not the sticky dust the foam will not clean it ,
so instead get theac vents out and clean them by hand and soap.
thankyou :)
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