THESE THINGS: https://www.amazon.com/Carbona-Stain-Devil-Pack-Cooking/dp/B00FGWGMW2/ref=pd_lpo_2?pd_rd_w=byyQ1&content-id=amzn1.sym.116f529c-aa4d-4763-b2b6-4d614ec7dc00&pf_rd_p=116f529c-aa4d-4763-b2b6-4d614ec7dc00&pf_rd_r=CKVEWE06K5ZAYCRZGVSY&pd_rd_wg=rhTjc&pd_rd_r=9ed85372-4a9f-43bd-98db-9d969dfc2df3&pd_rd_i=B00FGWGMW2&psc=1

They sell them at our grocery store locally, and we bought some not long ago. Not long after, at a baseball game, our daughter was eating a slice of folded pizza, and the grease dripped from the crease in the pizza and onto a gigantic grease spot on her shirt. With two washes (following the directions), the grease spot was gone.

It has also gotten bacon grease out of my own shirt.

I don't know what they put in that stuff, and as a 40 year old man, I've gotten grease stains on my shirts here and there for many years, without anything (even all sorts of things from the internet) actually helping. Until these things. Carbona grease getter-outer is one of those products that I will tell everyone about, because it's just that great of a product.