Every home should have bleach and Lysol for cleaning and disinfecting, an advanced first aid kit with an activated charcoal "universal antidote" in case accidental poisoning, flashlights, batteries, fire extinguishers, and perhaps an oil lamp or camping lanterns, and several gallons of bottled water. Maybe even a camping stove if the power goes out and you have an electirc stove.
Bicarb Soda! It is an amazing cleaning product and effective. Bicarb soda is environmentally safe aswell and great if you are worried about cleaning products with your children. Here is a recipe that is great for cleaning anywhere in your house from bathtubs to floors! 1tsp bicarb 1tsp pure soap flakes squeeze of white vinegar 1 cup warm water