Yeah don't think imo heat mats are any use for locusts ( only wondered about red heat lights as 1 of my white basking lights fused today and I have a couple of reds about . I do have 3 ches which I'm planning on using as it's getting cold in the uk. 2 of which are bulbs 150 watt and a linear 240 . But obviously any of which would need to be put on thermostat ( also my adult locusts are in an exoterra enclosure, so don't really know how the plastic in the screen top would cope with the the che heat