Ack! Should have mentioned. Don't get the brick type of eco earth. Like what you would use for BPs.
Too much of a pain to get right for Ts.
Get the fluffy type. My PZB just dug out an increasingly impressive tunnel which is completely visible through the cup. Make sure to fill the cup about 2/3 high when tamped.
1.1 Ball Pythons (Python regius)
1.0 Brazilian Rainbow Boa (Epicrates cenchria cenchria)
0.1 Boa constrictor imperator
1.0 Pac man frog (Cerotophrys cranwelli)
0.1 Green Water Dragon (Physignathus cocincinus)
1.0 Scottish Terrier (Canis domenticus poopus muchus)