I'm setting up a new enclosure, aside from a base layer of small gravel would sand or soil make for better living conditions? I have carolina mantids if that makes a difference. Thanks
Soil will keep the humidity higher, so i would say that soil is better. BUT! If you mist frequently you can have sand as well. it's what you prefer more! I use nice colored sand sometimes, like blue or green. Never had any problem's, the only thing is that i have to mist more often, but that's not really an issue.
I would be keeping several mantid that are native to North America (Chinese, Carolina, or European. I can't tell the difference) How would the species make a difference and why if it matters?
Well like someone said already soil will hold more humidity so i was trying to see if the species would require alot of humidity. I guess the decision is up to you depending on what you would like to have. I have my sub adult ghosts in a soil covered enclosure with live plants and such.
I really feel you will be wasting your time with sand or soil. It just is not needed. It will get dirty and at some point you will have to change it out. Much easier to change out some paper towels or some moss. I can understand going with sand or soil if the tank is planted but otherwise it is a bad choice.
While sand and soil will make nice asthetically, they won't work very well. Even if they perform adequately, as Rick said, its not worth the trouble to continually change their cages and mist often, or to pay more for less.
Soil, micro wave or bake it on a tray before re hydrating it, less mold/un wanted insects.
You can still get molds build up in a moist environment just like on moss or tissue or vermiculite if there is organic material (half eaten food, droppings etc) left for too long, easily solved