Technical - Anyone ever used mass loaded vinyl under the carpet

[ATTACH] I finished the 55 flooring this weekend, covering everything with Kilmat. I was reading online about a stuff called "mass loaded vinyl". I

Technoflex Technowall Mass Loaded Vinyl 1 lb 4' x 25' x 1/8

Noise Grabber Soundproofing Mass Loaded Vinyl 1 LB 1' x 1', 1 SF

2LB Mass Loaded Vinyl

How to Install Mass Loaded Vinyl for Soundproofing Walls, www

Mass Loaded Vinyl Sound Barriers

Mass-Loaded Vinyl (MLV) Products for Soundproofing

Misinformation on Mass Loaded Vinyl

Use for soundproofing bedrooms, floors, basements, conference rooms, studios, apartments, machinery, pipes and more. STC rating 26, 1/8 thick Made

Soundsulate™ 1 lb Mass Loaded Vinyl MLV, Soundproofing Barrier 4' x 25' (100 sf) - see all options

Mass Loaded Vinyl Information

Noise Grabber Soundproofing Mass Loaded Vinyl 1 LB 1' x 1', 1 SF

Mass Loaded Vinyl - Commercial Acoustics® - MLV Soundproofing Barrier

Sound deadening/blocking car where can I get mass loaded vinyl

Soundproofing Mat - 10kg Membrane Mass Loaded Vinyl