I’ve gotten to like it, since it’s like a living, breathing pet. It can smell icky sometimes though ;)
It won’t ‘go bad’ unless you don’t feed it often enough. As long as it can eat and reproduce, it won’t develop any mold or anything. It seems it’s when I forget to feed it that spores or whatever it is can grow on it.
Now you’re making me laugh! I’ll add it to my collection along with my dog and cat.