Snout and Shell 32 oz Deli Cup Fabric Vented Insect Feeder lids by & - Pack of 10 Cups lids

Purchased these to make my own fruit fly cultures. They arrived quickly and are just as described. Made a culture the day they arrived. And the fly’s are thriving! They are exactly what I needed for this. Now I can raise my own food for my spiders… and save some money!

Fruit fly culture perfection! Tons of room for large colonies The cups get flimsy if you’re pouring hot medium in them but if you cool them before popping the lid on, they’re sturdy

Unfortunately, I had made the fly cultures before test fitting the lids. Something I didn't think I had to do, however as you can predict, the flies just ended up escaping if I didn't have any weight on top of the lid to try to create some semblance of a seal. On top of that, the mesh fabric on some lids end up peeling away in the presence of a stiff breeze. Poor quality, poor construction, don't waste your money.

I love these containers for bugs, caterpillars, and fruit flys

These cups work as intended. I have ordered these a couple times now and it is the same. The lids are the biggest issue. I put hot water in them when making fly cultures and the plastic becomes soft and when you are hurrying to close the container once the flightless fruit flies are inside the lid does not go on easily. During the process the containers will buckle and the some flies may escape. But after a few feedings the lid becomes easier to secure.