Use for scraping food scraps (especially greasy or oily sauces) from dishes into your kitchen scrap recycling bin, where available, or the garbage. Scraping reduces the amount of water needed to wash dishes. When rich sauces, vegetable oils and other fats go down the drain, they can cling to pipes and build up, causing blockages in your home sewer line or your neighborhood main. Garbage disposals don't help - they hog water and energy, and send fats just a little further down the line. Scraping first saves water, energy, and your sewer pipe. One per household.