I do not know how well it would work. I have used similar for damp areas in my house , didn't see much of a difference.
With that said for grow rooms no matter how many i ever grew,
i always had low RH in the beginning weeks so i always used a Walmart mist type Humidifier.
And it worked great, once i got around second week of veg it was no longer needed as plants respiration equalized everything so had 60- 65 RH lights on and 70 - 80 off perfect for veg
When it came to flower, i never worried about RH until last 2 weeks where i would just place a dehumidifier in room to maintain 50 - 60 RH
People worry to much over RH when they should be worrying about having lots of air movement around plants leafs
At the End of the day people got to stop worrying about band aid fixes .
Buy the right tool or do not even bother ..
growers will spend a shit load on garbage for there grow rooms, over time