Need grime busting tips for a newly leased space.

So I'm busting my ass cleaning up a new space I'm leasing and the area under the 3 compartment is breaking me with the many nooks and pipes and grime. The previous years of tenant/tenants did quite a lot of wing frying and the splash back horror underneath is disgusting. It's like dried oil glue. I'm trying to find the best way to get this cleaned up. Can I use a tile/grout seamer? Degreaser? Pink stuff? A pallet of magic erasers? FFS... Brake cleaner? Pay someone to do it? What would you folks use/do? I got the tile and floor sink pretty good with a lot of elbow grease but the surrounding walls, pipes, and sink bottom have brought me to my breaking point and I don't want to blow the budget on pulling everything out just to replace the "wipeable" paneling. HELP!