Produces both oil and fertilizer as long as wandering is turned on.
It will not collect feces left on the ground, they have to be placed inside the bug.
Takes 15 minutes per conversion but it can work with different sizes of feces at the same time. Using 1 Human Feces, 2 Small Animal Feces, 1 Medium and 1 Large will give you 7 fertilizer and 7 oil in 15 minutes.
A single massive animal feces (titanosaur) will be converted into 16 bags of Fertilizer and 7 Oil.