Rub iron with aluminum foil to remove burnt on starch, etc.

Instead of bending over to try to pull or dig it out, here’s any easier solution: Pour a good amount regular table salt directly on the areas; the grass will die off.

Give this a try: Pour 1/2 cup baking soda down the drain and follow with 1 cup vinegar. It will fizz up. Wait for about a minute and then let hot water run down the drain. If drain is seriously clogged, you may need to call a plumber. Merry Maids