Cleans tile grout; pour onto kitchen floor, leave for a few minutes, wipe up.
Pour Coke on the tile line using a squirting top sports bottle and let it sit for about a minute. Give it a quick scrub with a grout brush or toothbrush (the Coke will get dirty from all the muck coming up from the grout). Wipe up the Coke with a paper towel or rag. Squeal with excitement over how much difference it made. Give the area a quick mop to keep it from getting stick.