When you want to feed it to animals, what is the process like? Do you open it take some out and close it again? When opening it to take some, won't air go inside. I did silage using water drums some months ago. I opened it after 21 days and the output was amazing. I took some out and covered it back. After another 21 days that I opened it again, it has spoilt. The lesson for me there was that air came in after opening it the first time and took some out. Off course air occupied the space where I took some out and damaged the remaining. I should have added fresh leaves and compact again to force air out.