UV protection... or rather detection........

hey I wanted to use Foylon in my grow room because I heard that it sheilded U V lite and stopped the ability for detection from the law....
they were out of it (they said they stopped making it) but I got some
'Ultreflect' instead. it is supposed to block 95% uv rays. my question is...
does this stuff work the same way as foylon. does anyone have a better product for block the lite?????

the best stuff on the market is c3 foil it looks like mylar but it is infar red and heat thermal image proof

Yeah the po-po's can only find you with heat, other end of the spectrum from the UV; AND if you have an attic between your grow and the world, you won't need to worry anyways.