These arrived with about 10 already hatched, and have been steadily hatching 10+ a day since (currently day 3), with plenty more pupae in the tub. Flies can be so hit-and-miss, but this has been a great batch!
Always hatch within days of arrival, i use them for my mantids as they climb up the sides. Great price and quantity! I would recommend these .
I ordered one tub of these but after 3 weeks no hatch, thought it might be me so I ordered another and you guessed it no hatch again, not sure if these are viable pupa when sent out as two out of two failed to hatch:(
all of the flies had arrived hatched and dies within 24 hours - obviously old stock!!!!