One thing about some insects - I used to have fish in an aquarium that were large enough to eat crickets in one bite, and every single insect I caught in our home and put in the water also had parasitic worms that tried to escape the host insect immediately when it realized the insect was in water - these parasitic worms seem to take up most of the insects abdomen. This might not be a problem in non tropical parts of the world, but it's like a horror movie in miniature.

http://theconversation.com/the-parasite-a-crickets-nightmare...