In insect anatomy class we learned that insects have salivary glands. Nutrients in their food begins to break down as soon as it is taken into the mouth.
If you want to raise the babies, start your fruit fly and cricket colonies so they are producing when you expect the eggs to hatch. Make some small cages so 3-4 will be in each cage.
If they have full grown wings, they are adults. There are quite a few grasshopper species. Most overwinter as eggs, and have obligatory diapause and wont hatch until spring. I see some green colored adults that overwinter here in Montana.
Powder post beetles. Larvae feed in the wood and adult beetles emerge, resulting in the holes. Used to be called death watch beetles because folks could hear larvae chewing in the wooden furniture. Folks were quietly in morning in the dead room, in contrast to the living room.
I use hardware cloth (aka wire screen) sold by Ace Hardware. I paint it with enamel paint to seal any metal residue. Home Depot sells stair ballisters which are 3' long and about 2" square and are redwood. Look in the section where wooden steps are located. make a wooden stand that is tall...
Unless your community is fogged for mosquitos, you should be ok. Is there any intensive production pf vegetables or fruit where chemicals might be used? Its not logical that insects carry insecticides.
California Department of Ag might frown on bringing insects from out of state. Are there state parks or other public areas that you could inspect. I am catching a lot of moths now in a light trap. Jacksons like them. I don't feed stink bugs to my chams. Are there any insects attracted to...
They probably are safe to feed. But, adult hoppers have sharp spurs on their hind feet (tarsi). These spurs potentially could cut lizards' lips. Prevent this by removing the hind legs. Does anyone have reliable information about internal grasshopper parasites that can infect lizards? There...
Put a dab of calcium in a plastic cup. Dump in your flies. Shake it bit. Dump them into your cage. If you can see the calcium on the flies clearly, you probably have used to much.