Many products used in the average household contain materials that are considered hazardous because the ingredients are flammable, corrosive, toxic or reactive. Many of these products are so similiar that their hazards might be overlooked or underestimated. But for those who wish to play it safe, there are alternatives. For cleaning windows, measure 3 tablespoons of ammonia, 1 tablespoon white vinegar and 3/4-cup water into a clean spray bottle. Spray on and wipe clean. Ideas for polishing metal: For brass, polish with worcestershire sauce; for copper, soak in a vinegar and salt solution; and for silver, soak in a quart of warm water containing 1 teaspoon of baking soda, 1 teaspoon of salt and a piece of aluminum foil. And that's the On The House tip for today.