Now make two suitable containers to rear the mealworms. A two-liter soda bottle works well. Cut the top off and use the bottom half of the bottles, place about twenty mealworm larvae into each container. Next, add two cups of cornmeal to one container and one cup of cornmeal to the other container. Add a slice of apple or potato to each container for moisture.
Label the containers as A and B.
This activity is designed to determine how well each test group does with a fixed amount of food so do not add any additional cornmeal to either container. Replace the potato or apple slice every week. When you do this, count the number of new larvae, pupa, and adults. Do this for 12- 15 weeks and record your observations in the charts.