Good for small spiderlings that are newly hatched (newly hatched to 1/8 or 1/4”) Or other smaller critters
Freshly started culture of melanogaster fruit flies.Melanogaster flies are wingless and smaller then hydei.
Cultures can sometimes get sloshed around during shipping, but will still contain eggs which will hatch and start the culture if no flies make it. Though most of the time the flies are ok as well.