Where to use 3M Adhesive Back EMI Absorber AB5100S?

I’ve considered that. But, before I start cutting up the sheets, I’m looking for guidance as to where I’ll get the most benefit. I also don’t want to muck up a components innards by shorting something, or worse. 

I've tried similar, great around transformers. But like I said, try a full sheet just laying on top. Then try laying inside. No need to cut anything, and impossible to short being as the backing is non-conductive.

From which components did you get the greatest benefits?

Try listening with the lids removed. 

? What does this have to do with the 3M sheets?