I have had some issues with the last batch of house fly pupae not hatching. I am not exactly sure what happened but I think it was an issue on my end and not my suppliers. I got a new fridge and did not check the temp they were being kept at and it possibly was too cold. At least that is the only reason I can think of. None of mine are hatching and I am assuming none of the ones sent out either. If you ordered house fly pupae in the last 2 weeks, please contact me (I will be contacting people this weekend either way) and we can work something out. I apologize for the inconvenience.