32 oz deli cups are great for rearing fruit flies, waxworms, and other feeder insects in. Josh's Frogs has also used 32 oz deli cups to raise dart frog tadpoles in. 32 oz deli cups are sold without lids. For fruit fly culturing, these cups can be used in conjunction with our Vented Insect Lids or Fabric Vented Insect Lids.