Final answer:
Baking soda is a common, non-toxic household item that can clean surfaces and eliminate odors effectively. Vinegar, lemon juice, and ammonia are also used for cleaning, but ammonia should be handled with care due to its toxic nature.
Step-by-step explanation:
The common non-toxic item that can be used to clean surfaces and eliminate odors is baking soda. Baking soda, or sodium bicarbonate, is a versatile ingredient and a mild alkaline substance that can remove dirt and odors, cut through grease, and can be combined with vinegar for a chemical reaction that helps clear drain blockages.
Vinegar, which is a diluted form of acetic acid, is also used widely for cleaning and deodorizing due to its acidic properties that can neutralize alkaline odors while providing a cleaning action on surfaces.
Another natural substance that's often used is lemon juice, an acid that not only cleans but also leaves behind a pleasant fragrance. Lastly, ammonia is also a common household cleaning agent; however, it should be noted that although ammonia is effective for cleaning, it is toxic and should be used with caution, especially in well-ventilated areas or diluted forms.
It's important to use these substances appropriately for safe and effective cleaning. For example, combining them with other ingredients or using them on the right surfaces ensures that you can clean your home without introducing toxic chemicals.