Sounds like the Mr. Fusion thingy from the Back to the Future movies.

Oh great, a tiny device about the size of discman chock full of enough E.Coli to glow a light bulb. Then you come home one day and the damn dog has chewed the thing open and now you got that crap spread all through your house...

Does it shit out the waste material?

ernie, there's harmless E. coli and the bad stuff. Most of it is the harmless kind, of which this stuff probably belongs.