Spying on competitors on Shopify

Hi,

What I need is a tool that will let me see same products as I have in my store in competitors store. What I mean is this:

Lets say I'm selling bottle of water that I imported to my store through oberlo. I would like to see other shopify stores that have the same bottle of water listed.

I'm sure there is the way.

How can I do that?

Help is much appreciate.