Borax is a miracle cleanser: plus it's cheap and nontoxic. Sprinkle your sink with a dusting of borax for a great scrub. To clean your floors, mix a half cup of borax with a gallon of water. And it makes a fabulous oven cleaner. Coat the inside of your oven with borax, and let it work its magic overnight. The following day, scrape away the muck and rinse.