I need to travel for 1 week in January, and I have to go by plane so I can't really bring them with me (I think the x ray scanners at the airport would kill them (?), and plus, I don't want to get in trouble for bringing "pets" on board).
I read somewhere that you can take advantage of the wicking motion of water by connecting a piece of string to the container, with the other end of the string hanging in a bucket of water. The water will travel up a string and keep the substrate of the container moist. I know this works for plants while I am away, but I wonder if it'll work for mantid cages too.
My nymphs are still eating FFs though I think in January they may be big enough to handle regular flies. In that case I can just leave some pupae in there and the flies will hatch. Some of my nymphs are probably still too small for regular flies, so is there some way to keep fruit flies alive for a couple of days in the mantis containers? If I keep the FFs alive in the enclosures, I might also run the risk of having the fruit flies interfere with any mantids that are molting.