yet another question

I have been using foil as a reflector and now know this is bad idea I see alot of talk about mylar and the fact that it can be found at home depot. My question is what is it for I mean why do they have it at home depot so i know where to look. thnank you . Also another mylar product people use , wrapping paper, what kind is it ...what am i looking for. I have searched this site and I couldnt seem to find this particular info.

Just go to walmart and get the shiny silver colored plasticy wrapping foil because that is the mylar you seek

flat white paint works great too...

that wraping paper is imposibel to find, go to wal mart, in the camping section, and get a emergency blanket, they are cheap and work well, i got one bigenough to cover my whole closet for 4 bucks

i have one of them and have no prlobem getting them just worried about the fact they are a bit translucent I was thinking about using some of those blankets and i figure if i fold them at least in half maybe even quarter of normal size that should basically "close up" all the pinholes making it very reflective. I looked in walmart and a store that specializes in parties,cards,flowers,wrapping paper,etc... figuring they would have the right wrapping neither did had foil tissue paper which didnt sound right. thanks for the help