The FEMA Are You Ready? An In-depth Guide to Citizen Preparedness lists the following items that should be included in any family's basic disaster supplies kit:

Question

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The FEMA guidance suggests having a three day supply of non-perishable food in your disaster supplies kit. This is because in most situations, it is reasonable to expect that emergency responders will be able to reach affected areas and provide assistance within three days. A one day supply would likely be insufficient for any disaster, while a seven day or one month supply may be unrealistic for many families in terms of storage space and cost. It is also important to regularly check and rotate out the supplies to ensure they remain fresh and usable in case of an emergency.

The FEMA Are You Ready? an In-Depth Guide to Citizen