Hi, The cage has a solid top with two three inch vents. They are old monitor cages.
Most of the year its dry here, but this time of year, we are tropical, monsoon season. Its very hot, and very humid. You just do not have to water as much.
I have a reptile building, and its outfitted with hose bibs thru out the building. So I just give a quick squirt only on the walls, the middle of the cage always stays dry.
Consider, in humid areas, like where you live, folks air condition rooms, which drys out the air. Here we use swamp coolers, which humidifies the air, so we end up pretty much the same.
I invented this setup when feeding monitors crickets, in these cages, the crickets had no problem breeding like crazy. So out with the monitors and in with egg crates and there you go. The big thing is food, I believe. I hear all this and that and so forth. Like with many things people tend to over analize. When we fed veggies, we had a very high death rate. When we feed only dry food, we have no problems. I have been producing my own crickets for about five years now.
a couple more things that I found odd was, it was recomended to use a hot room or cage. I found crickets use what monitors use, a normal room temperature, 75F, with hotspots. They also live a whole lot longer, up to 10-12 weeks. But then they can control their metobolism. Its possible with cooler temps, and closed up, we do not dry out the crickets so they do not require water at all times. Around here, wild crickets do not have drinking water at all, yet they do fine, why?
I have also used leaflitter over the dirt, it seems to help with the pinheads, but its not necessary.
I use to use a more commerical setup, but it was too much work. So I went to this, which has very little work. I hope this helps. FR