My best suggestion is to treat 'it' like the dreaded "A" word. Try not to 'break it'. Westinghouse, Hillside, NJ brings back memories; my 'old hometown'. The 'a' word used to be used a lot, had feeders in switchgear wrapped in it. The disposal costs (legal) have gone way, way down here in NJ. Last I heard doubled plastic trash bags were all that was required, but it has to go to an approved landfill.
Loose fibers are the bad boys with this stuff, so do your best not to break it. BTW, dispose of it legally, or it will come back to haunt you.