Mold and Mites!!
I opened my bin today to see white grayish fizzy mold across areas on the entire top of my bin and little yellowish mites were crawling on my bin lid.
What could have caused this overnight? I added some onion and garlic skins yesterday along with some coffee, really just the papery skins though, not actual onion. Is it possible I just had the lid pushed down a little too hard and enough air flow wasn't getting through? Should I consider leaving the lid off for a day to encourage the worms to burrow and air things out??