Thank you for the feedback! The sponges could be autofilled by inserting a tube attached to pressurized water line into the middle of each sponge. This would keep them wet. We know that crickets are not very smart. On earth a sponge is used for water because they will drown themselves in open water, which of course can not be in microgravity. The pump used in other habitats sounds great for removing any evaporated or escaped water from the air.

The basic material of the habitat is plexiglass. It is 30cm long, 10cm wide and 6cm high. It will have a small opening similar to that in the glovebox for the rat habitats so that crickets can not escape but an astronaut can put his hand in when necessary to load or remove crickets or food.

Our plan was to keep the airflow very low so that it will not blow the crickets around. We doubt this will remove all the wastes since cricket droppings are very sticky and gram for gram greater than rat waste, but the filter system should take care of odors and remove some of waste.