Has anyone tried these products?

Agreed with @baylinor . You want more of an acoustic diffusion rather than just absorption. A lot of people get these panels for big noisy rooms or churches or attic Studios or things like that. There are several purveyors of good two feet by 4 ft acoustic panels out there. You can also try this:

https://www.costco.com/artika-sonolok-sound-absorbing-slatted-panel-kit.product.4000320081.html

@curiousjim  that's the thickness of the backing. The slats themselves are an inch thick.