What exactly is it made of. I mean could you take a styrofoam block and grate it into small peices and use it . Or is there somthing special about it?
krisk1227 Reviewed by krisk1227 on . Perlite question What exactly is it made of. I mean could you take a styrofoam block and grate it into small peices and use it . Or is there somthing special about it? Rating: 5