PREPAREDNESS TIPS - Store survival kits in a convenient place known to all family members. - Keep a smaller version of your supplies kit in the trunk of your car, at work, and at school. - Keep them in airtight plastic bags, if possible. - Change your stored water supply every six months so it stays fresh. - Replace your stored food every six months. - Ask your physician or pharmacist about storing prescription medications. - Rethink your kit and family needs at least once a year.