Get yourselves a Phiomia as well! Feed it stimberries and you'll have plenty of medium feces to throw in the dung beetle. Fill it up, and come back and watch more fertilizer than you can imagine. I'll never use compost bins again!
Dung bettle very usefull cuz can make some poops into vertilizer and oil, u should have this one bugs if you are the farmer (usefull tip : you better tame it after having a green house and large corp plots)