i have my sand boa(who i just got) in a aspen shavings and aspen chips mix. my question is.... how can i recognize his poop? is it the same color as lets say a rosys poo? i heard they have dry poop. im sure it would be easy to see on desert snow(which is what i have my rosys on) but i was told aspen is the best for sand boas. so just to reiterate my question.... how will or can i recognize his poo in the aspen?