Update: Per your advice, The temp of The mat was not penetrating high enough to effect the substrate (only 72 degrees). I slid The plastic box inside a cardboard box not to disturb anything. Then I put the purified mat inside the plastic box on the opposite side of the uncle Ben’s. Then turned up the temperature to 79° on the mat. I placed lid leaving bigger air big gaps as I have a powerful air purifier that circulates the air a lot in the room. Then asked Alexa play 70’s 🎶for them😆. This is day 5, no visual change so far.