INCREDIBLE! Add orange peels (or any citrus peel) to a quart of white vinegar in a closed container and let it sit at room tempurature for 2 weeks. After curing, remove the peels & store citrus vinegar in the fridge. For use: combine citrus-vinegar solution half/half with boiling water. Use for cleaning: floors, tile, fixtures, etc. Smells good & tough on scum! Best of all-- no chemicals.