after i installed some RAMMATT on my trunk it still rattles and i think it's because i wasn't able to add rammatt to the back of my trunk, i have a toyota celica and on my trunk theres an exterior wall and then theres another behind that (which i think is causing the rattle), i'm not able to get rammatt behind there because there isnt enough space to get my hands in there, well my question was is it safe to spray foam in there? will that even work?
