How often do you clean Reptile Carpet and Exo Terra Moss Mat has anyone used The Exo Terra Moss Mat and if so will it be a Safe substrate for African Fat Tail Geckos? I'm looking into starting with Reptile Carpet or Exo Terra Moss mats then eventually use Eco earth and go into bio active enclosures but I'm going to start with either Reptile Carpet or the Exo Terra Moss Mat along with Spagmum moss in there Humid hides i have a 40 gallon Terarium and my Geckos are between 6 and 7 months old I'm getting them in June.