Cleaning Grease of appliances for restaurants

So I’ve been looking for a way I can make extra cash outside of my part and full time jobs. I work in the kitchen at my part time job and it was my first job so I’ve been there for some time. The grease build up in a restaurant kitchen is insane and comes on fast when not taken care of often. When it wasn’t busy sometimes we would scrap and clean all the grease off. I was thinking of making this a mobile service for restaurants (no big chains but self owned businesses). Do you think this could be profitable and if so what are some good products if you know any. Steel wool works great as the appliances were old the owner didn’t much care about scratching but somewhere else may. Let me know your thoughts and thanks for your time!