I’m having trouble with a really nasty grease build-up. What would you recommend I do?

Everything and the Kitchen Sink is a degreaser and works best when allowed to sit on the soiled surface. After spraying the surface, cover it with a slightly damp paper towel for 5 to 10 minutes, then wipe it away. If that still doesn’t solve your issue, try a more abrasive tool like a scraper without damaging your surface. If that doesn’t work, well then what the heck did you spill on that thing!?