You might want to check your kits once in a while to keep them current. Canned and dried foods might be non-perishable but you still don't want to keep them for years and years. Check that everything is dry and in good shape. If you packed clothes, do they still fit?
Another key factor to disaster survival is rehearsal. Do real fire drills at home - the kind where the smoke detector is wailing and you're crawling through the house. The kind where you have 2 minutes to leave home. Do you know without a doubt where you would take shelter? The more these things are practiced and rehearsed, the more likely you will act upon them if necessary.