Question
I keep finding small piles(40-50pcs) of small round(maybe bb size) shiny brown balls in various locations in my basement. I know it's not from mice?

Answer
I would need a lot more information to help you. I would suggest visiting http://icwdm.org and search for the scat identification pages using the google search engine on the home page. That will provide you with a series of questions I need answered in order to help you. You might even figure out what it is yourself with the helps located there.