If you have a gas oven, you can still try this method, but you will need to turn off the pilot light, make sure it is out and the gas has been turned off. For safety precautions, wear rubber gloves and safety glasses when working with ammonia. You don't want it to splash up into your eyes! The Poison Control Center recommends disposing your ammonia down a sink where there is plenty of ventilation, such as a garage sink. If you do not have a garage sink, they recommend opening a window near the sink you are using for 10-15 minutes. Never mix ammonia with other strong cleaning agents, such as bleach or oven cleaners. Household ammonia cleaning solutions usually have between 5 -10% ammonia. If you store and use the proper safety precautions with household ammonia, it can be used WITHOUT any toxic effects.