Solo Large Soiled Bag

[capatown]

Hey guys, I'm a 31 untwinked monk and I'm trying to save for an FBSS, so saving money where possible. I'd love to get myself a Large Soiled Bag, though. Around what level would you need to be to try to farm one solo?

I think the guano guy himself is relatively low level (25?) but not sure how hard it would be getting to him and staying safe. Is 31 high enough or should I wait a while longer before trying?

Thanks!