Hi...
I don´t have any mantids right now, but I have had some through the years...
As with walking sticks, they require a quite high enclosure (3 times their height) with a lot of branches to climb on. A nice trick is to take a branch from outside (with fresh leaves on it) and place that one in a bottle with water inside the enclosure - then you will have fresh leaves for some days... Or if you just put some live plants in the soil...
Moist in the enclosure once, maybe twice a day, depending on how high humidity you have... They need higher humidity when they are about to molt (shed)...
They feed on almost any insect you can find, but if you don´t want to hunt insects for yourself, crickets will do just fine...
Keep them one and one, because they are cannibalistic - everything that moves are food according to them - so even your fingers...
Henke
Survival is the only game worth winning...