Fermented feed should be fed to your chickens within 24 hours after processing the fermented feed. Once the feed has been strained from the fermenting liquid, the fermentation process stops. The chances of the moist fermented feed going moldy increases the longer the feed is stored. If your flock doesn't finish their fermented feed within a day, you can cover it and store it in a cool location (like the fridge) for the next day, but after that, it should be pitched. If you continually have leftover fermented feed, consider decreasing how much feed you ferment each time. Chickens don't eat as much fermented feed compared to dry feed because the fermented feed is more nutrient-dense and filling.