Save yourself a trip to the store. Next time you need to clean, try one of these 31 secret cleaners that you already have at home. Pages 1 of 32 See All Coffee Grounds Use your morning pick-me-up to eliminate odors in the fridge. Simply place coffee grounds, new or used, in a bowl on a shelf. Replace them every two months for a fresh, slightly caffeinated smell. Check out these other uses for coffee! Pages 1 of 32 See All