I haven't been able to find a comprehensive list of what to feed Batterfly's and what the resulting poop pile size will be! I know the basics (3 meats, 20 grains etc.) but these darn cave flappers seem to be able to digest a wide variety of items.
For me, one of the easiest things to feed them is Bubbles. 10 plain Bubbles will get me one plop, and I have no problem getting hundreds of Bubbles just walking around the area.
Does anyone else have different things they feed the Batterfly's and know how many guanos the items generate?