Standard and Giant Mealworm Care
Ideal Temperature, Storage and Maintenance
All sizes of mealworms can be stored for several weeks if not months in refrigeration. If you get them prepackaged in a plastic cup, just simply put them in the refrigerator. If you buy them bulk and they come in a mesh bag or carton with egg crate, first remove the bag from the box and let them sit and come to room temperature. Or, let the entire shipping carton sit at room temperature for an hour or so, if necessary. Then place them in the refrigerator for a few hours. This will slow them down and they will not be as hard to get out of the newspaper or egg crate as they would if they were warm and active. Transfer them to a shallow, smooth sided tray or tub. If the sides of your container are smooth enough a lid should not be necessary. If a lid is used it should be well ventilated or your mealworms will become damp and die in a short time. Add a little bran, or crushed Wheaties, Cheerios, Corn Flakes, or oatmeal/cornmeal and you are ready to go. Remove your mealworms from the refrigerator once every 7 to 10 days, let them warm up to room temperature, then feed them a carrot, apple or potato slice for a few hours. This is how they get their drink of water and will stay fresh and plump.
- Keep dry and well ventilated.
- NOT TOO DEEP! - Maximum depth of worms and bran no more than 1" to 1 1/2".
- KEEP COOL! Ideally mealworms should be stored at range of 42-55 degrees F, so store them somewhere cool.