Hey,
I have had alot of experience with breeding crickets.
The older crickets probably will dig to get to the eggs and eat them thats why you should put the laying stuff in something like a plastic container.
Once the you have seen the females lay eggs for quite awhile and look thin then take the container and put it in some other container for them to hatch in.
Lots of people have been able to hatch the eggs but fail at raising them.
To raise them the container they are in should be dry if its moist they will die thats one of the secrets I have learned and you can feed them your own veggies like carrots, lettuce etc and the best thing to feed them is a product made by JurassiPet its like a cricket gultoad that are little brown stuff, that stuff makes them grow faster and if they dont get water they will eat the other crickets to get their fluids!
So for water get like a paper towel and wet it then put it on a lid of a container but not a tall lide something like the lid from the container your crickets come in from the stores.
Thats about all I know.